TSA employees are not allowed inside airplanes without the consent of the crew, airline employees don't need that authorization. Also, if you read the article it says these people must be invited by the airline. You know what that means? It means that if you're not at least Gold Status (50,000 paid miles flown in a year) or more likely Platinum (75,000 or 100,000 miles) chances are you will not be invited. These are our best clients, why not trust them a little more?