2014年5月15日，美国路易斯安那州，来自巴克斯代尔空军基地第307轰炸机联队的 B-52H 战略轰炸机接近第931空中加油大队的 KC-135 空中加油机准备进行空中加油。（A B-52 Stratofortress assigned to the 307th Bomb Wing, Barksdale Air Force Base, La., approaches the refueling boom of a KC-135 Stratotanker from the 931st Air Refueling Group, McConnell Air Force Base, Kan., during an air refueling training exercise, May 15, 2014. The two Air Force Reserve aircrews rendezvoused in the sky over Texas to practice air refueling technique and to maintain proficiency. The B-52 and KC-135 are two of the oldest airframes in the Air Force fleet.）

2014年5月15日，美国路易斯安那州，来自巴克斯代尔空军基地第307轰炸机联队的 B-52H 战略轰炸机接受第931空中加油大队的 KC-135 空中加油。（A B-52H Stratofortress from the 307th Bomb Wing, Barksdale Air Force Base, La., receives fuel from a KC-135 Stratotanker assigned to McConnell Air Force Base, Kan., May 15, 2014. The KC-135 was originally designed to refuel bombers such as the B-52 in the late 1950s, but has since expanded its role to refuel various Department of Defense and allied aircraft. Both the KC-135 and B-52H are expected to be flown well into the next few decades.）

2014年5月15日，美国路易斯安那州，来自巴克斯代尔空军基地第307轰炸机联队的 B-52H 战略轰炸机加油完毕脱离第931空中加油大队的 KC-135 加油机。（A B-52H Stratofortress banks away from a KC-135 Stratotanker after completing an aerial refueling, May 15, 2014. The B-52H is a long range strategic bomber that has been flown by the U.S. Air Force since 1955. The Stratofortress is from the 307th Bomb Wing at Barksdale Air Force Base, La., while the KC-135 is assigned to McConnell Air Force Base, Kan., and was manned by a crew from the 931st Air Refueling Group.）