Verticality

[firstyearref]

Hey guys,

As I sit here and watch the NCAA confrence playoffs, and remember those things coaches and player have yelled at me (no, i've never changed a call for them, relax), it leads me to just put this question to the crew that knows better.

I understand the concept of verticality, but it seems that many veteran refs still call fouls against those defenders that are standing with their hands straight up in the air, not moving, but the shooter moves his arms to make conact. So what is the call? No call? Foul on our poor helpless defender?

Nathan