Aaron Kimball is the President of the New California Republic in 2281. A former war hero, he campaigned against the various tribes of the Mojave Wasteland, overseeing the NCR's entry into the region. As president, however, Kimball has been criticized for his handling of the NCR-Legion War, which has been very costly for the NCR, both in terms of resources as well as casualties. In his persistence for securing Hoover Dam and supporting NCR expansion, President Kimball has won the support of General Lee Oliver and Colonel Cassandra Moore, but is opposed by Chief Hanlon. In 2281, the Legion attempted to assassinate Kimball while he was giving a speech at Hoover Dam. The outcome of this attempt depends on the Courier's actions.