I picked the M1 Abrams Main Battle tank.
There are three models, I chose the M1 / IPM1
According to the Specifications link below, the tank weighs 60 tons.
That is 60 X 2000 = 120,000 pounds.
From the specifications page the tank generates a Ground Pressure of 13.1 PSI

That is 13.1 pounds per square inch.
If a human body or something that had a surface area of 1 square foot.
I square foot is 12X12 = 144 square inches.

Taking the ground pressure of 13.1 PSI X 144 square inches = 1,886.4 pounds
Ouch, that would hurt.

As far as missile proof glass, I know of no such thing.
A missile would destroy the building the glass was in.

Here is the •M1 Abrams - Specifications link:
http://www.globalsecurity.org/military/systems/ground/m1-specs.htm

Home page of the M1 Abrams Main Battle Tank;
http://www.globalsecurity.org/military/systems/ground/m1-intro.htm

Google search that started all of my windy discourse [weight of a army tank]
http://www.google.com/search?hl=en&source=hp&q=weight+of+a+army+tank&btnG=Google+Search&rlz=1R2GGLP_enUS353&aq=f&oq=&aqi=
From there I went to:
M1 Abrams Main Battle Tank Jul 9, 2005 ... Over 8800 M1 and M1A1 tanks have been produced for the US Army and .... Due to the shear size and weight of the Abrams, the C-5 Galaxy, ...
http://www.globalsecurity.org/military/systems/ground/m1-intro.htm

Hope you enjoy this.
Wingman

Edit, went looking for bullet resistant/ proof glass.
The site in the link below offers four types and thickness.
GLASS LEVEL I is 1.185”
GLASS LEVEL II is 1.40”
GLASS LEVEL III is 1.59”
GLASS LEVEL III is call for more info.
http://www.pacificbulletproof.com/products/bullet-proof-glass/index.html

Wingman