The National Guard has struggled to implement a plan to test troops flowing into and out of Washington, D.C., for Covid-19, with some Guard members being forced to find their own tests and others pressured to leave their quarantine early to report to duty.

Already, hundreds of Guard members who poured into Washington, D.C., after the Jan. 6 assault on the U.S. Capitol have tested positive for Covid-19 or are quarantining in nearby hotels, three Guard sources said. Guard leadership has declined to release an official number of positive cases, but troops and lawmakers alike worry that the deployment is becoming a superspreader event.

“Ideally, these guys should all be in hotels. When they’re taking rest time, they should be taking it outside the campus with an ability to be separated and socially distanced,” Sen. Chris Murphy (D-Conn.) said. “Ultimately we’ve got to make sure that they’re not taking their extended rest time on campus, that they’re in hotel rooms.”