actually if this situation ever happens, I would try to figure out who they are first especially that they are just strangers. as long as I can get much information about them... I will proceed to help them, but if I could think of a way to refuse... then I would ask my family to handle the situation instead.
"If you can’t fly, then run, If you can’t run, then walk, If you can’t walk, then crawl, but whatever you do, you have to keep moving forward." - Martin Luther King Jr.