In a video released on March 7, 2010, Gadahn called on Muslims in the West to follow in the footsteps of Nidal Hasan, who committed the 2009 Fort Hood shooting. In the video, titled "A Call to Arms," Gadahn encouraged Americans and other Muslims in the West to "prepare to play his due role in responding to and repelling the aggression of the enemies of Islam." Gadahn also provided advice on choosing high-value targets for potential terrorist attacks in America and the West, such as military installations and mass transportation systems, as well as symbols of capitalism, whose ruin could cripple the Western economy. Gadahn urged his followers to take action as soon as possible, explaining that "now" is the "golden, once in a lifetime opportunity to reap the rewards of jihad and martyrdom…so unsheath your sharpened sword and rush to take your rightful place among defiant champions of Islam."