U.S. officials praised Elon Musk’s SpaceX this week for shutting down a Russian electromagnetic warfare attack on Ukraine last month, which sought to jam SpaceX’s Starlink satellite service that has been allowing Ukraine to access the internet for free since late February.

“The next day [after reports about the Russian jamming effort hit the media], Starlink had slung a line of code and fixed it,” Dave Tremper, director of electronic warfare for the Office of the Secretary of Defense, said on Wednesday as reported by Defense News. “And suddenly that [Russian jamming attack] was not effective anymore. From [the] EW technologist’s perspective, that is fantastic … and how they did that was eye-watering to me.”

The U.S. government is not able to make “those types of corrections” quickly, Temper warned, highlighting a “significant timeline” that involves analysis of what occurred, comparing solutions and obtaining a contract for necessary repairs.