BO WH Dig.. Not sure if i was able to load all of the file but here's the dates of visits:
11/24/09 Rice
5/19/10 Brennan AND Rice
6/8/10 Brennan
12/15/11 Rice
12/13/12 Brennan
5/14/13 NN
I did a filtered search.. Didn't see Clapper or Comey.. Will reload & see if some of the data didn't load the first time.