re: How soon before the first CFB stadium sings 2 national anthems

This is only one military veterans organization. I found a dozen more on the same Google search with the same message. There is a measure of disrespect going on here, but it's definitely not on Colin Kaepernick's part.

"An open letter from American military veterans in support of Colin Kaepernick
There are veterans who not only agree with Kaepernick’s right to protest, but also with how he did it"

(US Army veteran Richard Allen) Smith said that people burning the quarterback’s jersey “with the troops and veterans being the reason seemed ridiculous.” Being used wasn’t a new feeling. Smith said politicians and corporations often use the military and its servicemen and women for promotion. That leaves some veterans, like Smith, feeling like props for people who haven’t made the sacrifice, but want to cloak themselves in their credibility.
LINK /

As for your question concerning two separate anthems, why is it so hard for some people to understand that black people don't want a separate anthem or a separate flag. They are simply looking for equal treatment under the same flag you claim to respect. If you don't know why Kaepernick was kneeling, then you haven't been paying attention.

I've been a member here for a while. I just decided it was time for some participation.