[cripplecreek]

From your link.

A Border Patrol official says National Guard troops acted appropriately this week when they abandoned their post near the border southwest of Tucson as four gunmen approached from Mexico.

Sounds like a word game to me. Since they retreated they couldn't have been overrun.

[drhogan]

possibly the guard will be ordered to make a "strategic retreat" to somewhere near the canadian border, to prevent the possibility of being overrun by the gangsters.
that should fix the problem!