Unmanned ground vehicles mounted with life-size plastic coyotes are one idea proposed as part of a new effort to keep wildlife away from military aircraft.
In a recent exercise, U.S. Marines and sailors worked with Latvian Army troops to clear woods and build a warren of trenches designed for drone warfare.
Trump's partisan comments received cheers or jeers from the crowd, an expression of political views in uniform that would typically result in a reprimand.