Anybody that has a problem with what these two did is a freaking idiot.
They were outnumbered,approached and surprised by men carrying automatic rifles,and all they had were pistols.
On top of that they were seated in a car and had no expectation of being attacked.
Plus they were NG troops,and probably not even infantry types. They had two choices,they could give them their useless pistols,or they could die.
IMNSHO,they made the right choice.
Having said that,I suspect if those same Mexicans try this again,they may get a surprise THEY aren't ready for.