Other mistake: When Swagger shoots a driver through the windshield in the opening scenes, there is no hole in the windshield.
Factual error: When Swagger is shot, he uses Quick clot on himself. You do not open Quick clot with your mouth - if even a small amount of it gets in your mouth it will cause a very large amount of pain, and a massive case of cotton mouth. Also, you do not use it on anything other than the arms, or legs. Putting it on your stomach, or upper chest could cause even worse problems if it were to get anywhere near your lungs, or your stomach.
Suggested correction: Desperate times call for desperate measures.