GREAT FALLS — Passengers arriving at Great Falls International Airport often get one of their first impressions of the community before they leave the terminal. WATCH: Great Falls airport opens expanded concourse at 50-year markGreat Falls airport marks 50 years with new improvementsNow, as the building marks its 50th anniversary, the airport is wrapping up its latest round of renovations designed to give travelers more room and prepare the terminal for larger planes. Which, he said, created congestion as travelers arriving in Great Falls crossed paths with those waiting to leave. The gate project follows several other improvements completed in recent years, including an expanded ticketing lobby, an upgraded baggage system and other maintenance work. “In a lot of ways, we’re the front door in the way people experience Great Falls for the first time,” Faulkner said.