Does TSA check your firearm?

I'm curious, does the TSA conduct thorough checks for firearms during the screening process at airports? It's important for travelers to understand the security measures in place, especially when it comes to sensitive items like firearms. Are there specific protocols that the TSA follows to ensure the safety of both passengers and airport personnel when it comes to the transportation of firearms? Additionally, what happens if a firearm is found during the screening process? Are there consequences for travelers who attempt to bring firearms through airport security?