Winchester: But, know this. You can cut me off from the civilized world. You can incarcerate me with two moronic cellmates. You can torture me with your thrice-daily swill, but can not break the spirit of a Winchester. My voice shall be heard from this wilderness, and I shall be delivered from this fetid and festering sewer.
Potter: I think he's getting the hang of this place.
Dr. Winchester: My family has had problems with immigrants ever since we came to America.
BJ: Radar, old buddy, looking at you is like looking at money in the bank
Radar: All the other tents, they just say 'hello'
BJ: Would you like to join us?
Radar: What are you playing?
Hawkeye: Double Kranko
Radar: Yeah.
Hawkeye: Uh, bishops are worth three jacks...
Radar: Right...
Hawkeye: Checkers are wild...
Radar: Uh-huh
Hawkeye: And...you have to be twenty-one or older to open
BJ: Care to sit in for a hand?
Hawkeye: You'll get out by dawn.
Radar: Ah, no, thank you, sirs. Whenever I lose, I like to know why.
Answer: The C-42 was a military variant of the Douglas DC-2. Very few C-42's were built, so it's questionable that Potter would specifically have seen that particular model, but, given his military background, it's not entirely unreasonable that he might use the military designation even when the aircraft in question is actually a civilian DC-2.
Tailkinker ★