Mandatory Credit: Photo by REX/Shutterstock (8659953l) APRA HARBOR, Guam (March 24, 2015) Marines from the 3rd Marine Reconnaissance Battalion and Sailors prepare to launch a rigid-hulled inflatable boat aboard the hull of the guided-missile submarine USS Michigan (SSGN 727) during small boat exercises. The small boat operations demonstrated interservice cooperation during the exercise. US military operations