Also something else she doesn't state is:  1) ALL voting machines are "sealed" with a serialized seal that is checked before delivery to the polling site AND at the beginning BEFORE voting and again after the polls closed.  2) The menu she's accessing is an admin menu that allows you to perform diagnostics, set date and time, and in some cases automatic L&A (Logic and Accuracy testings) which is used to determine that all components are working.    Thankfully, Florida returned to paper ballot (which has it's own unique set of issues) but at least there is a paper trail!