IRR Muster exercise to be held April 16 Published March 23, 2011 7th Bomb Wing Public Affairs DYESS AIR FORCE BASE, Texas -- An Individual Ready Reserve Muster exercise is scheduled to be held April 16 at 9 a.m. at the Deployment Control Center here. The objective of the exercise is to gather and maintain IRR member contact information and availability of members to support a partial or full mobilization activation scenario. For more information, call 2nd Lt. Christopher Stepps at (325) 696-2518.