I am familiar with internal investigations, and I respectfully disagree that she should be forthcoming on these details at this point. She's under oath before a congressional committee. If she gets anything wrong or allows herself to open lines of inquiry into questions that have not been completely investigated, she gives the politicos another stick to beat her with. If there is any disciplinary action to be taken against SS staff, the employees involved have a right to due process. If anything she says suggests she has reached conclusions prematurely, she screws up the discipline process. She has these and other reasons to be circumspect in these hearings.
All the committee members know this, and they also know most of the public has no clue. They are using her as a political punching bag, to show the public they share our fears and concerns and impatience. They are playing us, in the most cynical way, by suggesting that it's a realistic expectation that the answers we seek should be available today, when they know that is not a realistic expectation.
All MOO, and with great respect for the very real concerns we all have about the safety and security of our public officials.