Here's what the US Air Force has planned for all its bombers

REUTERS/Cherie A. Thurlby/U.S. Air Force CAT/GN

• The US's three bombers — the B-1B Lancer, the B-2 Spirit, and the B-52 Stratofortress — will be joined or replaced by the B-21 Raider stealth bomber.
• The B-52 is expected to fly through the 2050s, and the B-2 accomplished a number of firsts this summer. The B-1B, meanwhile, had particularly low mission readiness this year.
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The US has three bombers — the B-1B Lancer, the stealth B-2 Spirit, and the B-52 Stratofortress — to deliver thousands of tons of firepower in combat.

Some form of the B-52 has been in use since 1955. The B-1B took its first flight in 1974, and the B-2 celebrated its 30th year in the skies in 2019. A new stealth bomber, the B-21, is in production and is expected to fly in December 2021, although details about it are scarce.

The US Air Force has been conducting missions in Europe with B-52s and B-2s in order to project dominance against Russia and train with NATO partners, but the bomber fleet has faced problems. The B-1B fleet struggled with low readiness rates, as Air Force Times reported in June, likely due to its age and overuse in recent conflicts.

Here are all the bombers in the US Air Force's fleet.

The Air Force's B-1B Lancer has had problems with mission readiness this year.

The Lancer is a long-range, multi-role heavy bomber and has been in service since 1985, although its predecessor, the B-1A, was developed in the 1970s as a replacement for the B-52.

The B-1B is built by Boeing and has a payload of 90,000 pounds. The Air Force is also looking at ways to expand that payload to carry more weapons and heavier weapons, including hypersonics.

The Lancer has a wingspan of 137 feet, a ceiling of 30,000 feet, and can hit speeds up to Mach 1.2, according to the Air Force. There are 62 B-1Bs currently in service.

The B-1B was considered nuclear-capable bomber until 2007, when its ability to carry nuclear arms was disabled in accordance with the START treaty.

The B-1B is not scheduled to retire until 2036, but constant deployments to the Middle East between 2006 and 2016 "broke" the fleet.

Service officials and policymakers are now considering whether the Lancer can be kept flying missions, when it should retire, and what that means for the bomber fleet as a whole.

The B-52 bomber has been in service since 1955.

The Air Force's longest-serving bomber came into service in 1955 as the B-52A. The Air Force now flies the B-52H Stratofortress, which arrived in 1961.

It has flown missions in Iraq during Operation Desert Storm and during operations against ISIS.

The B-52H Stratofortress can carry a 70,000 pound payload, including up to 20 air-launched cruise missiles, and can fly at 650 mph. It also recently dropped laser-guided bombs for the first time in a decade.

The Stratofortress is expected to be in service through 2050, and the Air Force has several upgrades planned, including new engines, a new radar, and a new nuclear weapon.

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