A sightline, sight line or visual axis, is a normally unobstructed line-of-sight between an intended observer (or spectator) and a stage, arena, or monument, for example. Sightlines are a particularly important consideration in theatre and stadium design, road junction layout and urban planning. sightline, sight line or visual axis, is a normally unobstructed line-of-sight between an intended observer (or spectator) and a stage, arena, or monument, for example. Sightlines are a particularly important consideration in theatre and stadium design, road junction layout and urban planning.
The CIA does do undercover (spy like) procedures because sometimes it has to but in actuality most of its information comes from people who offer to supply information. These people provide support to the CIA in support of their ideological, religious, political and personal beliefs. Some for vengence and others just out of greed.
Secret Service special agents are employed by the U.S. Secret Service, part of the Department of Homeland Security. Secret Service agents work to protect the president and other political leaders of the United States, as well as heads of foreign states or governments when they are visiting the United States.