The Standard Oil truck was used in refueling her plane. She is sitting on the truck watching as they fill her aircraft with fuel and start her plane to warm it up.
The officer at far left may be Lieutenant Curtiss LeMay who was stationed at Wheeler in 1935. He completed her departure inspection before she was allowed to take off.
Amelia mentions in her book that there had been a tropical downpour in Honolulu. The Weather Bureau warned her that if she didn't take off that afternoon, she would be held up indefinitely by storms coming across the Pacific Ocean.
Then there was a break in the weather. She returned to the field and had the last few gallons put in the plane.http://www.sepiasaturday/blogspot.com