You may start seeing, and hearing them, much more often now that the final four fighters arrived on island last week.

Hawaii is now home to a total of 20 F-22 Raptors, completing the fighter squadron for the Hawaii Air National Guard.

To mark the arrival, our cameras were allowed a rare opportunity to see the world's most powerful fighter jets up close as they ready for training.

Wednesday morning's training mission was a routine exercise of aerial combat maneuvers taking place about 100 miles north of Oahu.

But when the military's F-22 Raptors are involved, it’s anything but routine.

Six F-22 pilots are suiting up for the mission.

Nervous?  No.  Superstitious?

"Absolutely," said Lt. Col. Rob "Brutus" Jackson, as he was suiting up for the mission. "We try to do it the same way every time so you don’t forget anything."

Eighteen Raptors are on the ramp at Hickam at any one time.

At $146 million dollars each, they're considered the fiercest stealth fighter jet in the world.