At more than 1 million acres burned so far, the Smokehouse Creek Fire is Texas' worst wildfire ever, and the second-largest in U.S. history.

According to a filing with the U.S. Securities Exchange Commission, investigators from several insurance companies notified Minneapolis-based Xcel Energy on Thursday that one of its downed utility poles may be a possible cause.

Investigators also want to preserve a fallen utility pole "situated within the vicinity of the fire's potential area of origin."

USAF RET 1971-95 [Linked Image from jpgbox.com]