The most important aspect of these hearings came forward in the last ten minutes of the New Hampshire hearing.. i.e. when Gardner asked Hursti /  Appel / Rivest --   " What about open source voting systems " ?   None of the three could give a straight answer as they all shill for Microsoft   -  They gave corporate line response " Open source is no panacea ".. " Can't we just disclose proprietary code .. blah blah blah.."   Microsoft is in the way of national security per the experts  - see-  https://www.nytimes.com/2017/08/03/opinion/open-source-software-hacker-voting.html?_r=1  --   We need to have REAL experts giving SWORN testimony- and move thee country toward secure voting systems - see www.navo-us.org