Southwest Airlines took the wraps off its newest specialty aircraft Monday.

"Tennessee One" is painted like the Tennessee state flag and pays tribute to more than 30 years of service in the Volunteer State.

It took a crew 10 days to paint the Boeing 737-700 with the special look. That's two days longer than it would take for the standard Southwest livery.

The circular crest on "Tennessee One's" fuselage is about 20 feet wide, the same size as many outdoor swimming pools. The design consumed almost 30 gallons of red paint, the company said.

"Tennessee One" is the 11th plane in Southwest's fleet emblazoned with a unique state flag livery. The first was "Lone Star One," which pays tribute to the airline's home state of Texas. Each of the planes honors a state that has played an important role in Southwest's 45-year history.