02:47 - Source: CNN
'Probable cause' in Trayvon Martin case?

Retired police officer Lou Palumbo shares his expertise on the police surveillance tape of George Zimmerman after he shot Trayvon Martin. Palumbo also responds to Zimmerman’s father’s claim on what happened on the night of the shooting.

01:43 - Source: CNN
Does Zimmerman's dad's story add up?

Palumbo also explains the limits of power that neighborhood watch volunteers typically have.

01:31 - Source: CNN
Do neighborhood watches have power?