pirkei it is funny -- >> host: it is funny and you heard this in your research. >> guest: i heard from so many families. that's what my mother was doing the right her mother was doing ratio is that she was a secretary. it's almost caring teacher was sent. >> host: david is in las vegas. please go ahead. >> caller: yes, can you hear me? hello? >> host: please go ahead. we are listening. >> caller: i just wanted to make sure i was life. may i call you wise up? >> guest: sure. >> caller: i'm watching c-span and i always do every weekend. it was a few weeks ago and they had the spotlight on world war i, the code breakers by an american gentleman. do you remember anything at this person? >> host: david, i apologize. i can't remember what book that is. we've covered some books on this topic including barclays shetterly's and rocket girls and now of course liza mundy "code girls." michael from beachwood, ohio. you are on with author liza mundy and we are listening. >> caller: hi, this is my goal. i hope you can understand the all right. i am a 30 year veteran of the security group. one of the