Bomb threat at Fort Lauderdale Airport's Terminal 1.
Broward Sheriff's Office Airport District responded.
Terminal's upper level evacuated as a precaution.
Departures delayed for just over an hour.
Travelers express gratitude for law enforcement.
Concerns about missed flights and frustration.
Incident occurred around 5:26 p.m. on Sunday night.
Law enforcement responds to reported bomb threat.
Precautionary measures taken for public safety.
Traveler, Jadyna Seelye, urges calm and proper handling.
Deputies detain a man for questioning during the investigation.
Heightened security measures implemented at the airport.