Northrop Grumman B-2 Spirit in the context of "Northrop Grumman"

A bombing range, sometimes referred to as an air weapons range (AWR), is a remote military facility used by combat aircraft for air-to-ground weapons training, as well as for the research, development, testing, and evaluation of aerial ordnance. These ranges support precision targeting with high-explosive aerial bombs, precision-guided munitions, rockets, missiles, and other aircraft-delivered weapons, in contrast to field firing ranges used by infantry and armored units.

To minimise environmental impact and infrastructure damage, various inert "practice bombs" are extensively used to simulate explosive ordnance during precision targeting exercises. In addition, solid target practice (TP) ammunition is employed during strafing runs, offering ballistic realism without explosive payloads, unlike high-explosive (HE) or armour-piercing (AP) variants which contain energetic fillers or penetrators designed for destructive effect.

A penetrator is a long-range bomber aircraft designed to intrude against and penetrate enemy defenses. The term is mostly applied to aircraft that fly at low altitude to avoid radar, a strategic counterpart to the shorter-ranged tactical interdictor designs like the TSR-2 and F-111 Aardvark. The term can be applied to any aircraft that is designed to survive over enemy airspace, and has been used for the penetration fighter designs intended to escort bombers.

The classic penetrator design is the Rockwell B-1 Lancer, where the term was first widely used. The larger Tupolev Tu-160 is also a member of this class. Other aircraft, like the Boeing B-52 Stratofortress and some versions of the F-111 have also been adapted to this role. More modern designs, like the Northrop Grumman B-2 Spirit, can be technically classified as penetrators, but the term is not generally applied to these aircraft. The mission for the Next-Generation Bomber has been described as "penetrate and persist".

Stealth aircraft are designed to avoid detection using a variety of technologies that reduce reflection/emission of radar, infrared, visible light, radio frequency (RF) spectrum, and audio, collectively known as stealth technology. The F-117 Nighthawk was the first operational aircraft explicitly designed around stealth technology. Other examples of stealth aircraft include the B-2 Spirit, the B-21 Raider, the F-22 Raptor, the F-35 Lightning II, the Chengdu J-20, the Shenyang J-35, the Sukhoi Su-57 and the Bayraktar Kızılelma.

While no aircraft is completely invisible to radar, stealth aircraft make it more difficult for conventional radar to detect or track the aircraft effectively, increasing the odds of an aircraft avoiding detection by enemy radar and/or avoiding being successfully targeted by radar guided weapons. Stealth is a combination of passive low observable (LO) features and active emitters such as low-probability-of-intercept radars, radios and laser designators. These are typically combined with operational measures such as carefully planning mission maneuvers to minimize the aircraft's radar cross-section (RCS), since common hard turns or opening bomb bay doors can more than double an otherwise stealthy aircraft's radar return. Stealth is accomplished by using a complex design philosophy to reduce the ability of an opponent's sensors to detect, track, or attack the stealth aircraft. This philosophy takes into account the heat, sound, and other emissions of the aircraft which can also be used to locate it. Sensors are made to reduce the impact of low observable technologies and others have been proposed such as IRST (infrared search and track) systems to detect even reduced heat emissions, long wavelength radars to counter stealth shaping and RAM focused on shorter wavelength radar, or radar setups with multiple emitters to counter stealth shaping. However these have disadvantages compared to traditional radar against non-stealthy aircraft.

Bomber Task Force (BTF) is a strategic mission that has been undertaken by the Air Force Global Strike Command (AFGSC) of the United States Air Force (USAF) since 2018 to help develop the ability to operate from unfamiliar locations and integrate with allies and partner nations. The BTF is a development of the USAF's Bomber Assurance and Deterrence Missions which began in April 2014. The missions regularly support both Pacific Air Forces (PACAF) and United States Air Forces in Europe – Air Forces Africa (USAFE-AFAFRICA) and are conducted by the USAF's strategic bomber fleet of B-1B Lancers, B-2A Spirits and B-52H Stratofortresses.

Stealth technology, also termed low observable technology (LO technology), is a sub-discipline of military tactics and passive and active electronic countermeasures. The term covers a range of methods used to make personnel, aircraft, ships, submarines, missiles, satellites, and ground vehicles less visible (ideally invisible) to radar, infrared, sonar and other detection methods. It corresponds to military camouflage for these parts of the electromagnetic spectrum (i.e., multi-spectral camouflage).

Development of modern stealth technologies in the United States began in 1958, where earlier attempts to prevent radar tracking of its U-2 spy planes during the Cold War by the Soviet Union had been unsuccessful. Designers turned to developing a specific shape for planes that tended to reduce detection by redirecting electromagnetic radiation waves from radars. Radiation-absorbent material was also tested and made to reduce or block radar signals that reflect off the surfaces of aircraft. Such changes to shape and surface composition comprise stealth technology as currently used on the Northrop Grumman B-2 Spirit "Stealth Bomber".