Ally McPasty

6/25/2007 1:32 PM PDT BY TMZ STAFF
"Brothers and Sisters" starling Calista Flockhart took a break from waiting for Harrison Ford to return from shooting "Indiana Jones 4" -- by wading into a public pool in Deming, New Mexico.

The birdlike Flockhart, 42, appeared to take on a blue hue in the 100 degree heat, as she watched over son Liam.

Contain your joy -- she'll be returning to play Kitty next season.