Claim: Among 23 airports which applied to the Screening Partnership Program, only four airports including Bert Mooney Airport and Glacier Park International Airport, were accepted.
Evidence: As of 2016, 23 airports have participated in the SPP. Below is a list of participating airports: 
Bert Mooney Airport Bozeman Yellowstone International Airport Charles M. Schulz–Sonoma County Airport Dawson Community Airport Glacier Park International Airport Greater Rochester International Airport Havre City-County Airport Jackson Hole Airport Kansas City International Airport Key West International Airport L. M. Clayton Airport Orlando Sanford International Airport Portsmouth International Airport Punta Gorda Airport Roswell International Air Center San Francisco International Airport Sarasota–Bradenton International Airport Sidney–Richland Municipal Airport Sioux Falls Regional Airport Tupelo Regional Airport Glasgow Valley County Airport Yellowstone Airport Seattle–Tacoma International Airport