Master Sgt. Richard Thomas, operations chief with Engineer Company, Marine Wing Support Squadron 274, instructs one of his Marines on the proper procedures for felling a tree with a chainsaw, Jan. 28, 2015. The MWSS-274 engineers were clearing and preparing an undeveloped piece of land aboard Marine Corps Air Station New River for a forward arming and refueling point to be utilized as a future training area. - Master Sgt. Richard Thomas, operations chief with Engineer Company, Marine Wing Support Squadron 274, instructs one of his Marines on the proper procedures for felling a tree with a chainsaw, Jan. 28, 2015. The MWSS-274 engineers were clearing and preparing an undeveloped piece of land aboard Marine Corps Air Station New River for a forward arming and refueling point to be utilized as a future training area.