Bri, a trained service dog, greets troops and others upon their arrival from Iraq at the Bangor, Maine International Airport on Wednesday, July 10, 2007. The Maine Troop Greeters have done it for more than 1,800 flights since 2003 at Bangor International Airport, frequently the last U.S. stop for overseas-bound troops and their first taste of America on the return trip.The volunteer group is reaching a milestone: Sometime next month it expects to greet its 500,000th servicemember since the Iraq war began. (AP Photo/Pat Wellenbach)