931st ARG to host IRR muster Published March 22, 2013 By Master Sgt. Brannen Parrish 931 Air Refueling Group Public Affairs MCCONNELL AIR FORCE BASE, Kan. -- Members of the Individual Ready Reserve who live within 150 mile radius of the base will be called in for muster, May 4. The IRR muster program is one method of complying with 10 U.S.C. Section 12319 which requires the services to screen members to verify and update personal and medical data. The program ensures the Air Reserve Personnel Center is able to contact members in the event of mobilization. The IRR consists of Ready Reservists who are not assigned to a selected Reserve position and who are not participating for retirement points. Members of the IRR have completed prior service tours either with the active or Reserve component and have remaining time on their military service obligation. Muster screenings are conducted annually at active duty, Air National Guard and Air Force Reserve installations. Members of the IRR will have an opportunity to speak with Reserve component recruiters if they are interested in continuing their service in the Air Force Reserve.