Boeing’s new MH-139 helicopter arrived in Cheyenne on Tuesday last week and was on display at the Wyoming National Guard Open House by Wednesday. The aircraft was designed to enter into the competition to replace the U.S Air Force’s UH-1N Huey fleet, which was been in service since the 70s. The U.S. Air Force UH-1N Replacement Program plans to purchase 84 MH-139s, reports KGWN.