
NASA's Super Guppy —
NASA's Super Guppy hauls giant cargo ranging from smaller airplanes to components destined for the International Space Station. Click through the gallery for more images of big planes.

Inside the Super Guppy —
The Super Guppy includes a hinged nose that opens at more than a 200-degree angle. Its cargo hold measures 25 feet high, 25 feet wide and 111 feet long. Maximum payload: more than 26 tons.

World's largest plane: Antonov Mriya —
The six-engine Antonov An-225 cargo jet is widely acknowledged as the largest plane in the world. It's been spotted recently in Houston, Texas, Moses Lake, Washington; and over Chicago.

Boeing's 747 Dreamlifter —
A modified 747, the Dreamlifter was developed by Boeing to ferry giant aircraft assemblies for the 787 Dreamliner. Photographer Paul Carter caught it during takeoff from Paine Field in Everett, Washington.

The Pentagon's 'air freight terminal' —
Billed as the Pentagon's largest and busiest "air freight terminal," Delaware's Dover Air Force Base hosts the 436th Airlift "Eagle" Wing, which flies C-5 cargo jets and other aircraft to more than 100 countries around the globe.

The giants of Dover —
Dover's fleet includes the C-5M Super Galaxy, a four-engine, 65-foot-high behemoth that can tote quite a load: 270,000 pounds, to be exact. This thing has wings spanning 223 feet and 28 wheels to help it land smoothly. Its distinctive T-tail makes it easy to identify.

C-5: Wheels up —
A C-5B departs Massachusetts' Westover Air Reserve Base in this 2007 photo snapped by Paul Carter.

Skyking of military hauling —
The C-5, seen here in Afghanistan, moves entire units of fighting forces and their battle machines such as helicopters, trucks and tanks around the world at jet speeds around 518 mph. Its nose opens the full width and height of the cargo bay for quick, easy loading.

Cargo hold —
The C-5's cargo hold reaches 13.5 feet high. Its length stretches 143 feet, nine inches -- about 23 feet longer than the length of the first flight by the Wright brothers.

C-17 Globemaster III —
Another giant airlift jet stationed at Dover is the C-17 Globemaster III. You can also find this titan at Air Force facilities in Alaska, Mississippi, Hawaii, California, Washington, South Carolina, New Jersey, New York, Ohio and Oklahoma, according to the Air Force.

The Globemaster cockpit —
Unlike the C-5, with its seven-member crew, the Globemaster III flies with a crew of three: a pilot, a co-pilot and a loadmaster.

First deployed in 1993, the Globemaster III is among the Air Force's youngest airlift jets. Boeing is completing work on the final C-17, the Air Force says, which will be delivered later this year. The plane has been featured in Hollywood's "Transformers" and "Iron Man" films.

Largest passenger airplane —
The gigantic four-engine Airbus A380 is the world's largest passenger airplane. It's not too difficult to spot, if you're near its six destination airports in the U.S.: Washington's Dulles, New York's JFK, San Francisco, Los Angeles' LAX, Houston Intercontinental and Miami International.

Longest passenger aircraft —
Measuring 250 feet, Boeing's 747-8 Intercontinental holds the title of world's longest passenger aircraft. Boeing makes them and tests them at its facility in Everett, Washington.


