In this Jan. 5, 2021 photo from the U.S. Air Force, two KC-10 Extender crew chiefs board the aircraft at Al-Dhafra Air Base, United Arab Emirates. An Air Force KC-10 Extender that flew out of Al-Dhafra Air Base in the United Arab Emirates on Sunday, May 2, 2021, used the call sign “PIKLRICK” on a mission that saw it fly east out over the Gulf of Oman, according to flight-tracking data. The call sign appears to be a nod to an episode of the cartoon “Rick and Morty” in which one of the titular characters turns himself into a pickle to escape a family therapy session. (U.S. Air Force/Staff Sgt. Trevor T. McBride, via AP)