Then on Saturday and Sunday they’ll be the headliners of 14 flying acts at the McChord Air Expo.

Planners won’t publish a precise schedule, but the flying will generally begin between 10:30 and 11 a.m., and wrap up with the Thunderbirds performances at about 3 p.m.

“Planes break. Higher needs call them away. There’s all kinds of stuff,” said Maj. Doug Edwards, the Air Expo director.

“I don’t think we’ll post it by times, because the second we do, things will change.”

The show will end both days by 4:30 p.m., Edwards said.

On Saturday and Sunday, flying acts will take place in this order:

• C-17 air drop demonstration

• Air Force Academy “Wings of Blue” precision parachute team

• Jacquie B’s Pitts S-1T biplane

• Air Force Reserve jet car

• Bud Granley’s T-6 Texan

• B-2 Spirit bomber (Saturday only)

• F-15C Eagle tactical demonstration

• P-51 Mustang heritage flight

• Air Force Reserve jet car race

• C-17 tactical demonstration

• Bud and Ross Granley dueling YAKs

• F/A-18F Super Hornet tactical demonstration

• Navy Tailhook legacy flight

• Tim Weber Geico Extra 300

• Pearl Harbor reenactment

• Thunderbirds

Access to McChord will be open to the public on both days. Edwards said there’s plenty of parking but expect traffic to be jammed on Bridgeport Way Southwest leading into the base from Interstate 5.

Sound Transit is operating free buses from the State Route 512 Park-and-Ride lot and from Lakewood Town Center.

Visitors will go through one of two security checkpoints to get into the show area. Fanny packs and diaper bags are subject to search.

“The rule of thumb is if you can’t get on an airplane with it, you can’t get on the flightline with it,” Edwards said. “Security is not going to let you do so.”

A few other notable restrictions: No bikes, skateboards or rollerblades. No pets. No coolers, weapons, glass bottles, alcohol or backpacks.