The 270 rest area, northbound, is indeed where they were captured.

The week before, there was a big flurry of police activity on the southbound side of 270. Many reports were citing a white panel van of sorts as the possible vehicle they were operating out of. A little bit north of Germantown, Egans BBQ Service had parked their white catering van within site of the highway. Someone apparently "tipped off" the police that the snipers van was in a field beside 270, causing all sorts commotion.