Sen. Mark Kelly flew with Russian pilots in the Navy and with NASA, and he said the Russian fighter jet running into a US drone shows 'how incompetent they are'

• A US drone crashed after a Russian fighter jet clipped its propeller over the Black Sea last week.

• A think tank suggested the move was "aggressive messaging" by Russia.

• Sen. Mark Kelly, a former Navy combat pilot, said it was an example of Russia's incompetence.

Sen. Mark Kelly flew with Russian pilots as a US Navy combat pilot and as a NASA astronaut.

He said the incident last week where a Russian fighter jet dumped fuel on and then clipped the propeller of a US military drone shows how "reckless" and "incompetent" they are.

"I'm not surprised by this. I mean, I flew with Russian pilots, fighter pilots who couldn't fly formation. And I watched this video, and it's pretty obvious what happened. He lost sight of it, and he crashed into it," Kelly told CNN's Jake Tapper on "State of the Union" Sunday.

On Tuesday, two Russian Su-27 fighter jets intercepted a US military MQ-9 Reaper drone that was flying over international waters above the Black Sea. The jets dumped fuel on the drone, and one jet eventually clipped the drone's propeller. The drone eventually crashed into the water.