- Metrojet disaster has put new focus on airport security around the world
- Peter Bergen: Airports are vulnerable to militants who can get access through their jobs
Peter Bergen is CNN's national security analyst, a vice president at New America and a professor of practice at Arizona State University. He is the author of "Manhunt: The Ten-Year Search for bin Laden -- From 9/11 to Abbottabad."
(CNN)Concern that there might have been a bomb smuggled aboard the Metrojet flight by an insider at Sharm el-Sheikh airport raises the question: Could such an insider attack happen in the West?