Octane ratings are posted on fuel dispensers. CAUTION: Follow the fuel recommendations in your vehicle owner's manual. If your vehicle requires premium 91 or higher octane fuel, use a premium grade of gasoline. The least amount that's necessary to prevent detonation (spark knock). On most vehicles, that would be regular unleaded 87 octane gasoline.
The basic pay for any member of the U.S. military is based on two factors, rank and time of service. For an Air Force E-4, pay begins at $1,947 a month, or $23,364 a year, for those with less than two years of service.
Source:*U.S. Bureau of Labor Statistics. According to the U.S. Bureau of Labor Statistics (BLS), the average annual salary of an air traffic controller in May 2013 was $118,650. The average annual salary of an air traffic controller employed by the federal government was $122,490 in the same year (ww.bls.gov).