India, Aug. 12 -- Spokane International Airport in Washington state has returned to standard scheduling following a dramatic security response and evacuation protocol sparked by an unexpected fire alarm. The scare, which temporarily cleared the air traffic control tower, unfolded against a tense backdrop as regional emergency services continued monitoring fast-moving wildfires across eastern parts of the state.

While aviation authorities scrambled to verify the source of the alert, travellers experienced anxious moments wondering whether the unfolding crisis would paralyse local transport links.

Federal aviation officials acted swiftly to coordinate ground stops and safety checks while emergency crews investigated the source of the smok...