Ugh...lucky this happened *before* a plane had to make an emergency stop. Still...
One person on the forum where the images were posted said it looked like there was no mortar between the bricks themselves or between the bricks and the ground...not good for airports. But, interesting fact, the LDS temple in Salt Lake City, Utah was built without the use of mortar. The blocks fit so tightly together that no mortar was needed. So, bricks that have a super tight fit wouldn't need mortar to be immovable. I wouldn't bet an airplane on it, though.