This has happened repeatedly for people who are making connections or have been diverted. If the flight gets diverted, and your gun is retrieved from checked baggage and "bang" you are arrested at the baggage carousel when you claim your property. If your connecting flight gets cancelled and you retrieve your property they are waiting for you because your weapon is listed on the flight manifest.
Which is why the 2nd Amendment is a unalienable right. You can’t lose it by crossing state lines.