LOL!
Watch the video.
It's obvious that she's used to using that machine. No way did she switch to that machine from a Windows box in exchange for some spare Apple ad-budget change!
Here's another completely random technical presentation, in which the presenter's laptop just happens to sport that logo ...
https://www.youtube.com/watch?v=Dv8I_kfrFWw
The fact is, people who know computing and are not subject to economic constraints (e.g., they work for Google), prefer Macs.
Please be serious.
A room full of NASA IT people [the home of Global Warming Climate Change Polar Vortex Bombogenesis Whatever It's Called This Week, and Oh, Muslim Outreach] is supposed to be impressive.
Since you've obviously got more money than brains, go buy a clue: government IT People are by far and away the stupidest morons in the business. Most coders won't even subcontract for them because they're so stupid. The only way they got a vehicle to Mars was because they could throw billions of dollars at the problem.