How to find Sea-Tac’s new security checkpoint and not get lost

Seattle-Tacoma International Airport’s new security checkpoint opened Friday, but travelers can be forgiven for wondering where, exactly, it is.

In short, the new Checkpoint 1 is downstairs on the baggage claim level, below the hanging historic aircraft, a replica of the Rutan Voyager, the first to fly around the world without stopping or refueling, and a 1920s-era biplane, the Alexander Eaglerock.

The old Checkpoint 1, directly upstairs with all the other checkpoints, is now the new Checkpoint 2, a renumbering that extends down the line to Checkpoint 6, the former Checkpoint 5.

Port of Seattle officials say the expanded security capacity with its five new lanes will help all travelers because — as the ancient Roman saying goes — all security checkpoints lead to all gates.

The new, uns