PHOTO: KKTV
Now playing
01:03
Police radio captures chaotic scene of Colorado shooting
planned parenthood suspect in court vo nr_00005216.jpg
PHOTO: CNN
planned parenthood suspect in court vo nr_00005216.jpg
Now playing
01:52
Planned Parenthood shooting suspect in court
Planned Parenthood shooting suspect Robert L. Dear.
PHOTO: Colorado Springs Police Dept.
Planned Parenthood shooting suspect Robert L. Dear.
Now playing
02:01
2015: Robert Dear has outbursts in court
COLORADO SPRINGS, CO - NOVEMBER 27:  Hostages are escorted to an ambulance during an active shooter situation near a Planned Parenthood facility where an unidentified suspect has reportedly injured up to nine people, including at least four police officers, on November 27, 2015 in Colorado Springs, Colorado. A standoff has developed outside the clinic and the area is on lockdown. (Photo by Justin Edmonds/Getty Images)
PHOTO: Justin Edmonds/Getty Images
COLORADO SPRINGS, CO - NOVEMBER 27: Hostages are escorted to an ambulance during an active shooter situation near a Planned Parenthood facility where an unidentified suspect has reportedly injured up to nine people, including at least four police officers, on November 27, 2015 in Colorado Springs, Colorado. A standoff has developed outside the clinic and the area is on lockdown. (Photo by Justin Edmonds/Getty Images)
Now playing
03:51
Timeline of the Planned Parenthood shooting
planned parenthood shooting colorado witness sot newday_00000710.jpg
planned parenthood shooting colorado witness sot newday_00000710.jpg
Now playing
02:18
Victim describes facing down killer in Colorado
Planned Parenthood shooting suspect confirmed as Robert L. Dear date of birth of 4/16/1958 pic.twitter.com/4v2GtIsUgT
PHOTO: Colorado Springs Police Dept.
Planned Parenthood shooting suspect confirmed as Robert L. Dear date of birth of 4/16/1958 pic.twitter.com/4v2GtIsUgT
Now playing
00:50
2015: Robert L. Dear in court
Planned Parenthood shooting suspect Robert L. Dear.
PHOTO: Colorado Springs Police Dept.
Planned Parenthood shooting suspect Robert L. Dear.
Now playing
01:44
Accused clinic gunman appears in court
Planned Parenthood, whose Ann Arbor location is shown on September 7, 2014, operates 820 health centers in the US.
PHOTO: Susan Montgomery/Shutterstock.com
Planned Parenthood, whose Ann Arbor location is shown on September 7, 2014, operates 820 health centers in the US.
Now playing
01:36
What does Planned Parenthood do?
colorado clinic hostage kentanya craion sot simon_00035218.jpg
colorado clinic hostage kentanya craion sot simon_00035218.jpg
Now playing
04:07
Hostage: Gunman 'had no remorse'
john hickenlooper sotu_00005026.jpg
john hickenlooper sotu_00005026.jpg
Now playing
01:01
Colorado gov.: Frequency of shootings is 'unacceptable'
mike huckabee planned parenthood Robert Lewis Dear terrorism SOTU_00010903.jpg
mike huckabee planned parenthood Robert Lewis Dear terrorism SOTU_00010903.jpg
Now playing
02:47
Huckabee: Colorado shooting is 'domestic terrorism'
PHOTO: University of Colorado Colorado Springs
Now playing
02:29
Pastor speaks about officer killed in Colorado shooting
colorado springs planned parenthood moore cnni nr intv_00024129.jpg
PHOTO: KCNC
colorado springs planned parenthood moore cnni nr intv_00024129.jpg
Now playing
03:36
Investigators trying to identify gunman's motive
PHOTO: KKTV
Now playing
01:56
Planned Parenthood: No reason to believe we were target
planned parenthood shooting police presser tsr sot_00025605.jpg
PHOTO: kmgh
planned parenthood shooting police presser tsr sot_00025605.jpg
Now playing
03:38
Police: Suspect has fired upon officers
Colorado springs shooting planned parenthood past todd live tsr_00000407.jpg
PHOTO: Google
Colorado springs shooting planned parenthood past todd live tsr_00000407.jpg
Now playing
02:29
Has Planned Parenthood been targeted in past attacks?
photo of colorado springs shooting suspect custody planned parenthood brown sot nr_00001922.jpg
PHOTO: Getty Images
photo of colorado springs shooting suspect custody planned parenthood brown sot nr_00001922.jpg
Now playing
02:15
Colorado Planned Parenthood shooting: Suspect captured
Colorado springs shooting planned parenthood foreman live tsr_00003707.jpg
Colorado springs shooting planned parenthood foreman live tsr_00003707.jpg
Now playing
01:52
Police: Shootout with gunman at Planned Parenthood

Story highlights

Picking off the gunman permeates the hours-long scanner exchange

Officers discuss who has the best angle for a shot and what weapon to use

Worries over hostages being struck by accident prevent officers from taking sniper shots

(CNN) —  

Find the perfect moment to take out the gunman with a burst of well-placed shots. But take no chances of hitting one of his hostages by mistake.

For hours, officers sweated over that task together as they talked over police radio. And they wracked their brains Friday over how to safely shuttle out hostages from a Planned Parenthood clinic held siege by a gunman in Colorado Springs, Colorado.

Their tactical conversations, squawking on police scanner, went out over the Internet via streaming services like broadcastify.com, and tens of thousands of people listened in as the opportune moment to pick off the gunman eluded officers again and again.

’Cold stone face’

Scanner conversations are a collection of puzzle pieces – outtakes that can contain misunderstandings – and not the complete story, which investigators are still piecing together.

The shooter’s motives are not yet clear, nor have authorities said whether the siege was a targeted attack on the clinic, which offers family planning services, including abortions. Planned Parenthood has been the target of anti-abortion campaigners.

But the armed man left no doubt from the start that he was deadly. He opened fired while still in the parking lot – unleashing a barrage of bullets with a “cold stone face,” a witness said.

By the end of the day, Robert L. Dear, 57, had allegedly killed three people – one of them an officer – and wounded nine more. Five of the wounded were police officers.

Police talking over their radios agreed they had to stop the gunman to keep him from shooting many other people trapped in the building with him.

’Got the AK’

“Shots fired!” a warning squawked out over the scanner of the Colorado Springs Police and El Paso County Sheriff not long after law enforcement took up positions at the besieged Planned Parenthood clinic.

An officer had been wounded in the leg. The gunman fired “indiscriminately” through the walls, hitting police, a voice said.

Should we send in a robot to “get eyeballs” on the shooter, a man’s voice asked? Then he reported seeing the gunman jump over a counter and lie down on the floor.

01:52 - Source: CNN
Planned Parenthood shooting suspect in court
planned parenthood suspect in court vo nr_00005216.jpg
PHOTO: CNN
planned parenthood suspect in court vo nr_00005216.jpg
Now playing
01:52
Planned Parenthood shooting suspect in court
Planned Parenthood shooting suspect Robert L. Dear.
PHOTO: Colorado Springs Police Dept.
Planned Parenthood shooting suspect Robert L. Dear.
Now playing
02:01
2015: Robert Dear has outbursts in court
COLORADO SPRINGS, CO - NOVEMBER 27:  Hostages are escorted to an ambulance during an active shooter situation near a Planned Parenthood facility where an unidentified suspect has reportedly injured up to nine people, including at least four police officers, on November 27, 2015 in Colorado Springs, Colorado. A standoff has developed outside the clinic and the area is on lockdown. (Photo by Justin Edmonds/Getty Images)
PHOTO: Justin Edmonds/Getty Images
COLORADO SPRINGS, CO - NOVEMBER 27: Hostages are escorted to an ambulance during an active shooter situation near a Planned Parenthood facility where an unidentified suspect has reportedly injured up to nine people, including at least four police officers, on November 27, 2015 in Colorado Springs, Colorado. A standoff has developed outside the clinic and the area is on lockdown. (Photo by Justin Edmonds/Getty Images)
Now playing
03:51
Timeline of the Planned Parenthood shooting
planned parenthood shooting colorado witness sot newday_00000710.jpg
planned parenthood shooting colorado witness sot newday_00000710.jpg
Now playing
02:18
Victim describes facing down killer in Colorado
Planned Parenthood shooting suspect confirmed as Robert L. Dear date of birth of 4/16/1958 pic.twitter.com/4v2GtIsUgT
PHOTO: Colorado Springs Police Dept.
Planned Parenthood shooting suspect confirmed as Robert L. Dear date of birth of 4/16/1958 pic.twitter.com/4v2GtIsUgT
Now playing
00:50
2015: Robert L. Dear in court
Planned Parenthood shooting suspect Robert L. Dear.
PHOTO: Colorado Springs Police Dept.
Planned Parenthood shooting suspect Robert L. Dear.
Now playing
01:44
Accused clinic gunman appears in court
Planned Parenthood, whose Ann Arbor location is shown on September 7, 2014, operates 820 health centers in the US.
PHOTO: Susan Montgomery/Shutterstock.com
Planned Parenthood, whose Ann Arbor location is shown on September 7, 2014, operates 820 health centers in the US.
Now playing
01:36
What does Planned Parenthood do?
colorado clinic hostage kentanya craion sot simon_00035218.jpg
colorado clinic hostage kentanya craion sot simon_00035218.jpg
Now playing
04:07
Hostage: Gunman 'had no remorse'
PHOTO: KKTV
Now playing
01:03
Police radio captures chaotic scene of Colorado shooting
john hickenlooper sotu_00005026.jpg
john hickenlooper sotu_00005026.jpg
Now playing
01:01
Colorado gov.: Frequency of shootings is 'unacceptable'
mike huckabee planned parenthood Robert Lewis Dear terrorism SOTU_00010903.jpg
mike huckabee planned parenthood Robert Lewis Dear terrorism SOTU_00010903.jpg
Now playing
02:47
Huckabee: Colorado shooting is 'domestic terrorism'
PHOTO: University of Colorado Colorado Springs
Now playing
02:29
Pastor speaks about officer killed in Colorado shooting
colorado springs planned parenthood moore cnni nr intv_00024129.jpg
PHOTO: KCNC
colorado springs planned parenthood moore cnni nr intv_00024129.jpg
Now playing
03:36
Investigators trying to identify gunman's motive
PHOTO: KKTV
Now playing
01:56
Planned Parenthood: No reason to believe we were target
planned parenthood shooting police presser tsr sot_00025605.jpg
PHOTO: kmgh
planned parenthood shooting police presser tsr sot_00025605.jpg
Now playing
03:38
Police: Suspect has fired upon officers
Colorado springs shooting planned parenthood past todd live tsr_00000407.jpg
PHOTO: Google
Colorado springs shooting planned parenthood past todd live tsr_00000407.jpg
Now playing
02:29
Has Planned Parenthood been targeted in past attacks?
photo of colorado springs shooting suspect custody planned parenthood brown sot nr_00001922.jpg
PHOTO: Getty Images
photo of colorado springs shooting suspect custody planned parenthood brown sot nr_00001922.jpg
Now playing
02:15
Colorado Planned Parenthood shooting: Suspect captured
Colorado springs shooting planned parenthood foreman live tsr_00003707.jpg
Colorado springs shooting planned parenthood foreman live tsr_00003707.jpg
Now playing
01:52
Police: Shootout with gunman at Planned Parenthood

A warning: “It looks like he’s almost waiting, so just use caution.” Then: “He’s coming out! (He’s) got the AK.”