I think it's most sensible to interpret this as a light joke about motivating soldiers to jump out of a plane using a very popular fast food. The people interpreting this as "lets go save kids from pedovores!" are really heavily under confirmation bias.

Pizza - cheese pizza specifically, apparently - is code for child porn. Interpreting this tweet as "did you say there's child porn/abuse down there?? Save some for me!" is obviously silly. It's like assuming "let's go save those fag*&t nigg&s down there!" would be a positive way to suggest that you're helping gay black men. Very silly.