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 marks the fifth anniversary of Joining Forces and the 75th anniversary of the USO, a military service organization. Joining Forces is the nationwide initiative that the first lady and Jill Biden launched in 2011 to support active-duty service members, retirees and their families.

Former “Daily Show” host Jon Stewart is headlining next Thursday’s event at Andrews Air Force Base for some 1,500 service members and their families.

David Letterman, former host of “The Late Show,” is scheduled to appear while Judd Apatow is among the comedians who are expected to perform.

The comedy show is one of several events that Mrs. Obama and Mrs. Biden are participating in for their program’s anniversary.

The White House says they will appear together Monday on NBC’s “The Voice.” Mrs. Obama will also appear Tuesday on “NCIS” on CBS.