HMX-1
Marine Helicopter Squadron One ( HMX-1 ) is a United States Marine Corps helicopter squadron responsible for the transportation of the president and vice president of the United States , heads of state , Department of Defense officials , and other VIPs as directed by the Marine Corps and White House Military Office . 
<triplet> HMX-1 <subj> United States Marine Corps <obj> military branch <subj> squadron <obj> instance of