Heathrow Airport will test Terminal 5 prior to opening it. They have recruited around 15,000 volunteers to ensure the terminal runs well. The volunteers receive a free lunch and a goody bag for their help. They will go through mock security and baggage procedures to try and help cut down on delays when the terminal opens for business. During the first four weeks of testing groups of 30 to 100 people will test the facilities, rising to groups of up to 2,250 people just before opening which should test the facilities as though they were operating live. It will be interesting to see if the testing does make the new terminal more efficient.