"Finally, I'm no longer training and it's my actual job. It's my dream job."
Mr Walker said he had always been interested in being a pilot, but was unsure whether he wanted to fly civilian aircrafts or fly in the Air Force.
He applied for the Air Force in 2011, believing it would have more opportunities than flying civilian planes and he hasn't looked back since.
After completing officer training in 2011 and basic flying training in 2012, he began advanced flying training, giving him the opportunity to do all kinds of aerobatic manoeuvres.
"Doing double barrell rolls was one of the highlights. It was lots of fun and surprisingly it wasn't scary at all."
Mr Walker now hopes to fly even bigger and better planes and travel to different places with his career.
Commanding Officer of Flying Training, Wing Commander Richard Beaton, said the award of the pilots' brevet represented a milestone in every military pilot's career, and was the culmination of a demanding but rewarding period of training.
The graduates started with initial officer training before completing aviation medical training and survival training. The next step was learning to fly a CT-4E Airtrainer, culminating in 130 hours' flying time.
The final step was learning the complex systems of the King Air aircraft and flying as single pilot captains accruing an extra 90 hours.
The new pilots will go on to fly A109, NH90 or Seasprite helicopters, C-130 Hercules, Boeing 757s or P-3K2 Orions, he said.