Tensions ran high in Great Falls city commission chambers this week, sparked by a proposal to greenlight the latest — and biggest — project in the city’s recent apartment boom. After a tense and at times haphazard public hearing Tuesday evening, the Planning Advisory Board and Zoning Commission recommended changing the city’s zoning map to allow a decades-old trailer park on the southwest side to be converted into a flashy new high-end complex. With 513 units, the River’s Edge Apartments would be the largest residential property of its kind in Great Falls.