Here is my equation:

IF(OR(AND(I3="DG F",I3="DG M"),AND(H3=1,D3="UNK"),ReqPO!AH3,9999),ReqPO!AH 3)

I want to make this statement in the cell K3:

If (I3="DG F" or "DG M" ) and D3="UNK" and H3=0 then I want 9999 in K3.
However if there is a 1 in H3, then I need the ReqPO!AH3 number in K3.
Finally, if D3 = "N/A', then I want a blank cell for K3.