Starliner? Delays and cancellations.
KC-46? That POS still isn't reliably refueling, and if I understand correctly USAF is rumored to be looking for a replacement.
F-15EX? It can't use conformal fuel tanks the F-15E has been using for almost 40 bloody years. No, that means it can't achieve its major selling point of carrying 22 missiles either.
737 MAX? Clearly maximum kek given this and that whole comedy about safety exemptions yesterday.
I want to like Boeing, but I feel it's justifiable to tell them to go fuck themselves at this point.
EDIT: I also forgot that V-22 Osprey that crashed into the sea off Japan back in November, killing all on board. As far as I'm aware, that led to a complete grounding of all Ospreys by all US military branches and also the JSDF pending investigation findings.