| SENECALAKE | Body of water in New York state used by the US Navy to test equipment such as transducers and sonar arrays and systems |
| ATACAMA | Region of Chile used by NASA to test equipment for Mars missions |
| PONYEXPRESS | Post Office New York state's used for letter delivery system once |
| PEAT | Partially carbonised vegetable matter saturated with water, in its processed state used in potting composts (4) |
| IMPECCABLE | USS ___, minesweeper used by the US Navy during World War II originally ordered as HMS Brutus for the Royal Navy |
| TOMAHAWK | Cruise missile used mainly by the US Navy and Royal Navy (8) |
| MEMORIALDAY | A federal holiday in the United States, used to honour military personnel who died in the line of duty (8,3) |
| CRICKETBATS | Test equipment that makes insect crazy |
| TESTBED | Equipment used for trials of new equipment, such as aircraft engines |
| APPARATUS | Piece of laboratory equipment such as a test tube, pipette or beaker (9) |
| MACHINETOOLS | Fixed power-driven equipment such as lathes and grinders (7,5) |
| ATOLL | Coral island and surrounding reef such as Diego Garcia (used by the US as a air base in the Indian Ocean) and Mururoa (used by the French to test nuclear weapons in the Pacific) |
| ONEIDA | ___ Lake, large body of water in New York state, US north-east of Syracuse (6) |
| LAKEPARRAMATTA | Body of water in New South Wales created by the damming of Hunt Creek in 1855 |
| ELITE | "On March 3, 1969, the United States Navy established an ___ school for the top one percent of its pilots. Its purpose was to teach the lost art of aerial combat and to ensure that the handful of men |
| CATALINA | Seaplane widely used by the US and other countries during World War 2, in military use until the 1980s (8) |
| BOOTCAMPS | In the US, basic training stations for new recruits to the US Navy or Marine Corps (4,5) |
| AGENTORANGE | Powerful herbicide used by the US armed forces to defoliate jungles in the Vietnam War |
| MENOFHONOR | 2000 film starring Cuba Gooding Jr. which tells the story of the first African American Master Diver in the US Navy (3,2,5) |
| MORESBY | In a naval battle in the Coral Sea, the US Navy prevented Japanese landings at Port ... in Papua |
