Halsey, who is scratching the neck, met by Nimitz. Later it was declared Halsey is suffering from shingles.
Nimitz: Guess you don't like the chokers either.
Halsey: I'd get grease on that thing just trying to button it up. Makes me look like a damn waiter.
What does it mean, "button it up"?
I find this line in movie Midway 2019.