alexander hague. i did it until i left in 2011. >> host: this hour has no rhyme or reason. the clips were chosen by mike holden who produces the program. the objective is to show the audience. we want a -- a little bit and get you to explain that. before that, i want to show some video tape from 1973. alexander butterfield testifying. >> i was aware of listening devices. yes, sir. >> when were those placed in the oval office? approximately the summer of 1970, i cannot begin to recall the precise date. my guess, mr. thompson, is that the installation was made between -- this is a very rough guess, april or may of 1970, and perhaps the end of the summer or early fall, 1970. are you aware of the devices installed in the executive office building of the president. >> yes, sir. at that time. >> fred thompson is what was a senator and actor and was the counsel for the republicans back then. where did you find alexander butterfield? >> guest: umm, oh, some of thement -- them we found through google or people who knew people. we put out the word that we were doing these. initially the nixon foundation -- the private n