Not sure why all the fur is flying here. Seems there are some pretty basic facts here.
Can a 200mW laser "reach" a plane a few thousand feet above the ground? Well, it depends on the amount of cloud rain etc. and on the laser type but on a clear night with an Argon ion laser the answer is definitely yes. However, without some reasonably clever optics, the spot size would be very large by the time it got to the plane and it would be very unlikely to hurt the eyes of the pilots. They would not be dazzled or temporarily bilnded. They would notice the green / blue light and it might distact them somewhat. Clearly not a good thing. If the laser was more powerful, 10W or 20W say and somebody knew what they were doing (with a simple telescope on the end of the laser) then the potential for eye damage would be greatly increased. As a 20W Argon ion laser requires water cooling and a three phase electricity supply (not to mention about $50k to buy one) it is unlikely that yer average amateur boffin would be able to run one in his shed.
Richard Feynman was a brilliant Noble Prize winning physicist. He absolutely never said or believed that lasers could not hurt your eyes. You are confusing what he said about radiation and looking at a nuclear explosion. That had nothing to do with lasers - there are all different kinds of radiation - not just visible radiation e.g. light.