Q-1 Electric Blanket By Note: This item is currently in storage. This bag was originally designed to keep casualties warm during World War II. The donor reported that an alternative use was keeping the engines warm on P-51 aircraft. Donated by Mr. William J. Waldron. Click here to return to the Featured Accessions index. Find Out More Related Fact Sheets North American P-51D Mustang Note: The appearance of hyperlinks does not constitute endorsement by the National Museum of the USAF, the U.S. Air Force, or the Department of Defense, of the external website, or the information, products or services contained therein.