On January 15, the Air Force admitted that 34 officers in charge of nuclear missiles were suspended due to cheating on monthly proficiency tests. While there were monitored practice scenarios ensuring that the officers knew how to do their jobs, the cheating represented a lack of integrity. The US nuclear arsenal has been subject to several blunders, as on June 28, 2012, Sister Megan Rice and two other anti-war protesters broke into the Y-12 National Security Complex. The Y-12 stores weapons grade uranium and is considered to be one of the most secure locations in the country with $150 million spent annually on security. In addition, in 2007 the Air Force lost six hydrogen bombs and didn’t realize it till 36 hours later.