All branches of the United States Armed Forces are represented in the Freedom Museum USA. Exhibits of both official and private memorabilia from military and civilian sources offer a well-rounded view of American military history.Located in Pampa's Memorial Park, Freedom Museum USA is open to the public Tuesday through Saturday, from noon until 4. Mitchell B-25 WWII Bomber Our largest exhibit is a B25-D Bomber. A loan from the US Marine Corp Museum in Quantico, Virginia. We are in the process of accepting donations for the construction of an exhibition hanger on the museum grounds to house the bomber and other memorabilia. One of the museum's earliest gifts was a Vietnam-era Bell UH-1F "Huey" helicopter. Bell UH-1F "Huey" Helicopter M110A2 Howitzer One of the museum's many static displays, the M110A2 Howitzer was used in Desert Storm. © 1998-2000, Freedom Museum USA. All Rights Reserved. A Tri-Talents Production.