Infrastructure Minister Ray Harmer's defended closing down a lane outside the airport during a recent terror alert.
The lane was closed after the UK raised its terror threat level to the highest possible following the Manchester attack.
However, a number of international airports in the UK didn't take similar measures, leading North Douglas MHK David Ashford to query why the move was thought necessary.
In the House of Keys, Mr Harmer said he had to act on the advice from the UK:
Illegal immigrant turned back at Manx border can't stay in UK
Bank scammers warning as calls target Island residents
Island to extend UK VAT cut on power, says Treasury Minister
Woman thanks mystery van driver after daring sea rescue
Stay off damaged slipway in Laxey, says local authority
MHK sues attorney general and returning officer over election votes
Islanders reminded to keep challenging domestic abuse beyond October