Mostly to make the public “feel” like something is being done. Determined POS terrorists probably wouldn’t have a huge problem circumventing a lot of this. When we still lived in FL, we travelled a lot and Mrs. rktman flew a lot for work out of Orlando. There was a program called “Clear” that used to be in place there and it sure worked well for us.
“Mostly to make the public “feel” like something is being done...”
I’ve heard it called “security theater” on numerous occasions.