WTAE is the Hearst station in Pittsburgh and is also an ABC affiliate.
WATE is the Nexstar station in Knoxville and it to is an ABC affiliate.
The call letters are very similar, but wait till you see the logos.
This is the logo for WTAE:
And this is the logo for WATE:
Looks very similar if you ask me.
So, the question is, which station copied the other?