Boom! Boom!

Two welcome sounds split the silence of Southern California just before dawn.

Some wonder if we’ve had an earthquake as their windows continue to rattle.

Others believe they’ve heard gunshots and brace themselves for accompanying sirens.

Not me. I breathe a sigh of relief as I instantly recognize the familiar sound the shuttle makes as it passes overhead.

Two minutes later, Discovery glides to a perfect landing on a darkened runway in the Mojave Desert.

Glad to have you back, gang!