What's a good route to take for a end goal of a job in the federal government?

Currently in a part-time mail clerk contractor job with the IRS and doing a Bachelor degree in digital forensics. I want to gain some experience in digital forensics before I graduate college but don't know what is the better option.

Should I:

1. Stay in my current job and get an internship or volunteer in digital forensics in a police department or PI firm
2. I heard TSA is in the security space so I thought about trying to get …

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