Camp Liberty is one of the main coalition military bases in Iraq. Camp Liberty is located near the Baghdad International Airport.WashingtonPost.com: Five U.S. Soldiers' Deaths Came at Hands of Comrade, Military Says (May 11, 2009)

On May 11, 2009, the U.S. military reported that five soldiers were shot by another American soldier on the base. According to CNN, at least three others were also injured in the attack that occurred at a clinic for troops who need treatment for the stresses of war.The New York Times: U.S. Soldier Kills 5 Comrades in Iraq, Military Says (May 11, 2009)

On the morning of Monday, May 11, 2009, military officials reported a shooting on the base. A soldier opened fire on fellow troops injuring at least three and killing five other soldiers. The shooting occurred at about 2:00 p.m. local time. The suspect was taken into custody.Stars and Stripes: U.s. Soldier Kills Five U.s. Troops in Baghdad (May 11, 2009)