The US Army presents its national salute to America’s heroes’ Memorial Day celebration as part of the Air and Sea Show, a patriotically-infused showcase of military technology and power, military and first responder demonstrations in the air, on the sea and on the land. During the celebration the US army will feature helicopter demonstrations, bootcamp challenges, and a Golden Knights’ parachute team performance. 9 a.m.-4p.m. Display Village at Lummus Park between 10th and 14th Streets. Details: www.GoArmy.com.