Terrible news from Washington D.C., as a gunman has opened fire at the National Holocaust Museum on Wednesday afternoon. One security guard and the gunman were hospitalized after exchanging fire. The Associated Press is reporting that the security guard has died. The gunman, reported to be James Wenneker von Brunn, is an 89-year-old with links to white supremacy groups. He was seen with a rifle. A third person was injured by broken glass. The Holocaust museum, which draws nearly 2 million visitors annually, requires guests to pass through metal detectors. The Washington Post is also reporting that authorities are attempting to ensure the safety of over 100 targets listed in a notebook carried by the gunman.