WASHINGTON (AP) — President Barack Obama and Vice President Joe Biden are joining their wives next week for a USO comedy show in observance of Military Appreciation Month.

The event also marks the fifth anniversary of the national initiative Joining Forces. First lady Michelle Obama and Jill Biden launched Joining Forces in 2011 to support active-duty service members, retirees and their families.

The event at Andrews Air Force Base next Thursday also marks the 75th anniversary of the nonprofit military service organization the USO.

Former "Daily Show" host Jon Stewart is headlining the show for some 1,500 service members and their families. David Letterman and Judd Apatow are among the comedians expected to perform.

It's one of several events that Mrs. Obama and Mrs. Biden are participating in for their program's anniversary.