Coastal cities in the US are home to more than 450 airports and heliports with average field elevations below 10’ Mean Sea Level (MSL). Some 150 of those airports are below 5’ MSL. While the end of the 35-year lease term you’re about to sign may seem distant, if your coastal airport falls in the latter category, it may be completely erased by the ocean by that time, or will be subject to regular flooding rendering it unusable before the expiration of the lease term. What to do? (Airport Business Magazine, February/March 2020)