The Dulles Day Family Festival and Plane Pull is getting bigger than ever this year, according to airports officials.

A team at the Dulles Day Plane Pull on Sept. 25, 2010. (Tracy A Woodward/WASHINGTON POST)

Officials said more than 60 teams will compete with the four-time champion Chesapeake, Va., Sheriff’s Office defending its title in the final pull of the day. Other teams who have signed up so far include representatives from AOL, Cisco Systems; Merrill Lynch, the Loudoun County Sheriff’s Office and the Transportation Security Administration.

The annual event raises money for Special Olympics Virginia through team pledges. Metropolitan Washington Airports Authority officials said the event has raised more than $1.1 million since the first one in 1993.

In addition to the plane pull, the day will include a pizza eating contest, drawings for air travel and airfield tours aboard the infamous mobile lounges.

Admission and parking are free for the event, which runs from 11 a.m. to 4 p.m. (There should be signs directing you to a parking lot for the event, and free shuttles will take you to the entrance gate).

Officials say the event will take place rain or shine.

Teams can register online or call 703-359-4301.