From the website:
Twilight Tattoo performances begin at 7 PM. Pre-ceremony pageantry begins at 6:45 PM. Performances from April 25 through June 20, except May 23, will be located on Summerall Field on Joint Base Myer-Henderson Hall in Arlington, Va. Performances on May 23 and from June 27 through August 29 will be located on Whipple Field on Joint Base Myer-Henderson Hall in Arlington, Va.
As a prelude to the Neighborhood Day festivities on May 12, visit Joint Base Myer-Henderson Hall for the ever-popular Twilight Tattoo event on Wednesday, May 9, beginning at 6:45 pm. Twilight Tattoo is an hour-long military pageant featuring Soldiers from the 3rd U.S. Infantry Regiment (The Old Guard) and The U.S. Army Band "Pershing's Own."
The performance is free and open to the public. Bleacher seating is on a first-come, first-served basis. Event parking will be in the parking lots off Jackson Avenue, near the Fort Myer Officers Club and Caisson Stables. View the event flyer. Call 703-696-3283 for details.