White House, new visitor security measures put into effect. Visitors wait in line outside a trailer set up near the East Wing Entrance of the White House to leave their cameras, handbags, and parcels for inspection, as part of new security precautions established in response to the crisis in Cuba. White House Secret Service agent Gerald A. Jerry Behn (partially hidden) and Presidential Assistant John J. McNally stand in the background at far right. The woman in the foreground at far right holds a copy of The White House: An Historic Guide (the White House guide book). Washington, D.C.