It is so simple that Allah's (God's) angels with Muslims all times, it was not needed bring a man to Afghanistan for research purpose, what is this in Afghanistan, happing with Nato forces .... so please accept the Holy Book Quran and Accept Islam.....
Note:- In during war with Non Muslims the Muslims cannot see the Angels but Non Muslims can see closely.
See and look the old history books in the era of Sahaba Kiram....
Only way that you may read and accept the Idea of One God (Allah),
Idea of Last Prophet Muhammad,
Idea of judgment day please, this is called Islam.
To be Muslim this is so simple please to become a Muslim and these ideas are also described in Christianity and Jewish religion as well.