Col. Joseph Martin, commander, 2nd Heavy Brigade Combat Team, 1st Infantry Division, Multi-National Division – Baghdad, and Sgt. 1st Class Bill Collins, who serves with the brigade's personal security detail, talk prior to a recent mission. The Soldiers of the Dagger brigade PSD are riding alongside their counterparts from the 2nd Brigade Combat Team, 101st Airborne Division (Air Assault), prior to their transfer of authority to get more familiar with the streets of Baghdad.