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People don't behave rationally all the time, and neither do characters in fiction. Your characters don't need to make the right choices all the time, they just need to make believable choices that ...
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#3: Attribution notice added
Source: https://writers.stackexchange.com/a/30380 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#2: Initial revision
People don't behave rationally all the time, and neither do characters in fiction. Your characters don't need to make the _right_ choices all the time, they just need to make _believable_ choices that we understand. Spending some time on the character's motivations for taking this risk will help sell his choices to your readers. Perhaps Mike's relationship to his mother is very close, or maybe he feels guilt over something with her? Whatever the reason, he needs a motive for putting others at risk or he'll not be a very sympathetic character. Perhaps by putting his comrades in danger Mike is, in some way, redeeming something else?