I guess a Powerpoint on a flash drive wouldn't be very much protection these days... https://en.wikipedia.org/wiki/Theodore_Roosevelt "While [Teddy] Roosevelt was campaigning in Milwaukee, Wisconsin, on October 14, 1912, a saloonkeeper named John Flammang Schrank shot him, but the bullet lodged in his chest only after penetrating his steel eyeglass case and passing through a thick (50 pages) single-folded copy of the speech he was carrying in his jacket." At 03:02 PM 4/17/2014, Eugene Salamin wrote:

According to this letter published in the Notices of the AMS,

www.ams.org/notices/200706/tx070600693p.pdf

an AK-47 bullet can penetrate 4-5/32 inches into a stack of Notices.

-- Gene

...

________________________________ From: Henry Baker <hbaker1@pipeline.com> To: math-fun@mailman.xmission.com Sent: Thursday, April 17, 2014 8:05 AM Subject: [math-fun] The NRA computes pi ??

FYI --

http://arxiv.org/abs/1404.1499