Feds probe 2nd report of Mexican military helicopters in US airspace.

From the Houston Chronicle:

The U.S. Department of Defense said it was investigating the second sighting within three weeks of a Mexican military helicopter flying in U.S. airspace over rural Zapata County.

“The incident did occur and it's still under investigation,” department spokeswoman Maj. Tanya Bradsher said, confirming that the copter, believed to belong to the Mexican navy, was seen Sunday.

U.S. Customs and Border Protection spokesman Rick Pauza earlier in March confirmed a Mexican military helicopter hovered as long as 20 minutes on March 9 over a residential area near Falcon Lake, a reservoir on the Rio Grande.

He said CBP officials who lived in the neighborhood were among those who saw it.

Pauza said the helicopter crossed back without incident and that once the sighting was reported up the chain of the command “that was the extent of it.”