SSgt Steven Nisbet, a pararescue jumper assigned to the 83rd Expeditionary Rescue Squadron at Bagram Air Field Afghanistan, explains the special features of an enhanced battle rifle to Brig. Gen. Joseph Guastella, 455th Air Expeditionary Wing commander, during his visit to the squadron, Aug. 18, 2012. Guastella took part in a nearly two hour training mission with PJs and combat rescue officers of the 83 ERQS, also known as the “Pedros,” to see firsthand how they contribute to the war on terrorism here in Afghanistan. Guastella expressed his appreciation for their efforts and for their part in continuing to making the mission a success. (U.S. Air Force photo/SSgt Jeff Nevison)