http://wikitravel.org/en/Mecca
WARNING: Non-Muslims are strictly prohibited from entering the holy city of Mecca. The penalty is deportation from the country. Documentation will be checked upon entry and anyone not showing proof of being Muslim will be denied entry. As a solitary exception, the Mecca bus terminal (outside city limits) is open to all.
http://en.wikipedia.org/wiki/Royal_Saudi_Air_Force
The RSAF maintains the third largest fleet of F-15’s after the USAF and the JASDF.
I hate using Wiki for a source, But, it was quick.
As a Catholic I cannot go to Mecca but I can and have gone to Saudi Arabia.