system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do heads of state always board and deboard the aircraft using the staircase in full public view? Why don't they use more secure and easy methods like jet bridges?
gpt
It is easier to secure the airplane far from the airport terminal, where no vehicle can ever approach it without passing security forces. Near the terminal, numerous service vehicles are zooming by all the time.