text: Geographic Environments
  a hide or surveillance site. Teams may require the use of extreme cold weather (ECW) sleeping
  bags and tents. Goggles or dark glasses are required during operations due to the threat of
  snow blindness.
  • Northern summer conditions are characterized by long periods of daylight, numerous water
  obstacles, and marshy areas. When aircraft or ground operations are restricted, the teams can
  use boats designed to navigate northern waterways.