Have Anons dug on previous inaugurations and number of military, law enforcement, etc.?

I found two sources showing around 30K for Trump in 2016. Although one is CNN.

What is "normal"?

http://www.msasecurity.net/security-and-counterterrorism-blog/2017-presidential-inauguration-security-analysis

https://www.cnn.com/2017/01/18/politics/trump-inauguration-security-protests-numbers/index.html