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.
Average Annual Salary. Bureau of Labor Statistics data showed that air traffic controllers earned a mean annual wage of $114,460 in May 2011. The best-paid 10 percent of workers in the profession earned $169,160 a year or more at this time, while the worst-paid 10 percent had to make do with $61,650 a year or less. The median salary of air traffic controllers in May 2011 was $113,540 a year. By industry, air traffic controllers working for the executive branch of the federal government were the best-paid for their work in May 2011, according to the BLS. They took home a mean annual wage of $117,300 at year at this time.