 So the Secret Service employs counter snipers whenever it does any type of protective venue, and the counter snipers are constantly looking and probing and checking the exterior perimeter. Sometimes it's easy. It's easier if there's not many buildings. Sometimes it's difficult. Think of Manhattan and all the buildings and windows in Manhattan. The counter snipers in the Secret Service do provide that surveillance of those areas. In some cases, they employ helicopters or aviation assets.