Capt. Ryan O'Connor, assistant logistics officer for 2nd Battalion, 25th Marine Regiment, leaps out of the Humvee Egress Assistance Trainer during the battalion's pre-deployment training at Mojave Viper Aug. 4, 2008. O'Connor was an Individual Ready Reservist who mobilized to deploy to Iraq with the reserve infantry battalion. IRR officers have an array of opportunities to mobilize in support of Marine Forces Reserve exercises and operations.