Any controller that covers that particular airport, or if they are VFR "Flight Following", whatever radar controller that covers that area. In other words, helicopters are controlled by the same Air Traffic Controllers as normal traffic.
To work in air traffic control, you must have an endless amount of knowledge of air traffic control laws, rules, and regulations. You also must have 52 consecutive weeks of air traffic control experience in a military or civilian air traffic control facility.
to control air traffic
Air Traffic Control - band - was created in 1993.
Air Traffic Control course Syllabus
Swiss Air Traffic Control Technical Association was created in 1999.
Understanding - 1994 Air Traffic Control was released on: USA: January 2001
air traffic control
Glen Alexander Gilbert has written: 'Air traffic control: the uncrowded sky' -- subject(s): Air traffic control 'An airborne computer system for navigation and traffic control' -- subject(s): Aids to air navigation, Air traffic control, Airplanes, Electronic equipment 'Air traffic control' -- subject(s): Air traffic control
R. D Elbourn has written: 'Simulation of air traffic control radar beacon code assignment plans' -- subject(s): Mathematical models, Air traffic control, Air traffic control simulators
The president's helicopter is known as "Marine One", which is generally a Sikorsky VH-60N. You can read more about it at the Navy's website: http://www.navy.mil/navydata/fact_display.asp?cid=1200&tid=900&ct=1
You may be able to tour an air traffic control tower. You will need to contact the airport and ask if they allow tours.
The Civil Aviation Authority UK & National Air Traffic Services UK