Lithuanian troops stand in formation prior to the arrival of British soldiers, not shown, for the Lithuanian Armed Forces Day Parade in Cathedral Square, Vilnius, Lithuania, Nov. 23, 2015. The service members have almost finished Headquarters Allied Rapid Reaction Corps’ (ARRC) exercise Arrcade Fusion 15. Arrcade Fusion is an annual NATO ARRC-led, multinational command post exercise designed to increase interoperability between NATO member nation forces. (DoD photo by Sgt. Mike O'Neill RLC ABIPP)