<P> NASAMS (Norwegian Advanced Surface to Air Missile System) were used to guard air space over Washington, D.C. during the 2005 presidential inauguration . The same NASAMS units have since been used to protect the president and all air space around the White House, which is strictly prohibited to aircraft . </P> <Ul> <Li> <P> For security reasons, the section of Pennsylvania Avenue on the north side of the White House is closed to all vehicular traffic, except government officials . </P> </Li> <Li> <P> White House at night </P> </Li> <Li> <P> North front of the White House on the reverse (back) of the U.S. $20 bill . </P> </Li> </Ul> <Li> <P> For security reasons, the section of Pennsylvania Avenue on the north side of the White House is closed to all vehicular traffic, except government officials . </P> </Li> <P> For security reasons, the section of Pennsylvania Avenue on the north side of the White House is closed to all vehicular traffic, except government officials . </P>

Who gets to live in the white house