The US military has 10-15,000 airframes. The US military trains hard and flies a lot of hours so accidents and failures are not completely preventable. They explicitly plan to lose an average of 2 airframes per month due to attrition, which is roughly their historical average. The crew is able to escape most of the time.

It may seem odd that they plan for these losses but the optimal amount of risk is non-zero. Excessive safety-ism interferes with effective training and operations, which risks lives in other ways. They aren't reckless but over-prioritizing never risking a life in training would defeat the purpose of it and institutionalize behavior that is ill-suited for actual warfare where risk is unavoidable.

Statistically the military environment is quite safe, particularly for young males, relative to the median lifestyle in the US. That is true even in some war zones, ironically.