Rep. Adam Schiff (D-CA), the ranking member on the House Intelligence Committee, opened Monday’s bombshell hearing on Russian interference in the 2016 election by warning that if it happened once, it can happen again.

“Only by understanding what the Russians did can we inoculate ourselves from the further Russian interference we know is coming,” he said.

Roughly three hours into the hearing, FBI Director James Comey agreed with him.

“They’ll be back,” Comey said of the Russian government. “They’ll be back in 2020, they may be back in 2018, and one of the lessons they may draw from this is that they were successful because they introduced chaos and division and discord and sowed doubt about the nature of this amazing country of ours and our democratic process.”

It is possible they’re misreading that as it worked, and so we’ll come back and hit them again in 2020. I don’t know,” he continued. “But we have to assume they’re coming back.”