Many Boeing workers who build airplanes are going on strike because they don't like the deal Boeing offered them.
They think the new contract doesn't give them enough money for their hard work making important airplanes for our country.
Boeing said the new deal would give them much more money than they make now, and would fix some of their work problems.
This is the first big fight at Boeing in a very long time, and it might cause some delays for new airplanes.
