The Transportation Security Administration (TSA) has issued more than 900 civil penalties and over 2,700 warnings since February 2021 against individuals who failed to comply with federal face mask requirements, the government reported on Monday. In a TSA report (pdf), the U.S. agency said it had proposed $644,398 in fines to 922 people who did not comply with a transit mandate requiring people to wear a mask. The fines were issued on commercial flights, in airports and train stations, or on public transit services. Most fines came from onboard aircraft incidents, where 788 individuals were fined for a total of $501,388, averaging $636. The highest average came from airport checkpoint fines, where 18 people received a civil penalty, totaling $57,065, averaging $3,170. Since the start of 2021, the FAA has investigated reports of 6,800 unruly airplane passengers including about 4,800 for not wearing masks. It has opened 450 investigations and proposed more than $5 million in …