British soldiers assigned to the 248 Gurkha Signal Squadron march to Cathedral Square, Vilnius, Lithuania, Nov. 23, 2015. The Gurkha Signals 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)