Re: At least people can take comfort from the fact that ...
While the aircraft may be okay if it loses an engine, what will the impact being on the general public and the press?
Headlines of "Heathrow flight taken out by drone, imagine what terrorists with two drones could do!!!!" may be difficult to manage.
We've already shown how willing passengers are to be molested by security staff and pillaged by airport shops in the hope of being "a little safer" from terrorists - drones around airports is more about managing PR than aircraft engineering at this point in time.