As the threat from ISIS grows, there are concerns that the terror group could exploit vulnerabilities in the U.S. electric grid.

Peter Pry, executive director of the Task Force on National and Homeland Security, joined Brian Kilmeade on Fox and Friends this morning and reminded us that last year the Knights Templar, a Mexican terrorist drug cartel, knocked out a power grid in Mexico, plunging half a million citizens into darkness.

Pry noted that ISIS has been in contact with known criminal gangs in Juarez and that the southern border remains "completely open." He pointed out that ISIS is wealthy and drug cartels will do anything for money, a very dangerous combination.

Instead of ISIS using their own people to infiltrate America all the way from the Middle East, they could use Mexican drug cartels and pay them to carry out an attack.

“The president is always saying he’s got a phone and a pen. Well, ISIS has got a phone and a pen, too,” Pry said.

Pry pointed back to last year's mysterious sniper attack on a California power station, saying the most immediate threat right now is a physical sabotage attack on a power plant.

He expressed concern that in the long-term, terrorists could seek to simultaneously disable a number of power grids electromagnetically.

"They would need a nuclear warhead to do that and ISIS doesn't have that yet. Although North Korea will sell anything to anybody," Pry said.

“One of the concerns of the congressional EMP Commission, on which I served, is that a terrorist organization might get hold of a nuclear missile from a rogue state and fire it from a freighter off our coast.”

Meantime, reports in June indicated that the entire country of Yemen lost electricity due to an attack on key power lines.

Watch the clip above.

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