No. Those agents work for ICTS, a contract security company, on behalf of the airline, not a government agency or airport authority. Many U.S.-based airlines that operate flights from Europe contract with ICTS to conduct screening of passengers, typically to ask baggage security questions.

(Note that these security procedures are separate from the normal security checkpoints with x-ray/metal detectors that usually are conducted by screeners working directly for, or sometimes on behalf of, the airport authority.)