Launched in 2014, the bi-annual Invictus Games uses sport to help the rehabilitation of wounded and ill service people.
In May, Orlando hosts the second running of the event with New Zealand sending 21 athletes to Florida - almost double the number which went to London where 12 athletes won six medals.
The life of Mr Sherriff, who enlisted in the RNZAF in 1987, changed forever when he suffered a motorcycle accident which left him paraplegic in 1993.
Re-training so he could see out 20 years of service, Mr Sherriff continues to work for the NZDF as an engineering drawing supervisor and says the Games have quickly become a popular and unique experience.
In London two years ago, Mr Sherriff was also surprised by some one-on-one time with royalty.
Prince Harry, a former British Army captain, championed the London launch of the event and is again helping promote this year's instalment.
Mr Sherriff says this year's squad carries an array of stories - including Kiwis wounded in Afghanistan.
"We have team members [with] varying types of injuries, some motor vehicle accidents, some illness, cancer, some injured ... either through IED explosions and medics injured while carrying Afghan national personnel," he said.
New Zealand athletes will compete across archery, athletics, cycling, indoor rowing, powerlifting, swimming, wheelchair basketball, wheelchair rugby and wheelchair tennis.
The 2016 Invictus Games will be held in Orlando, Florida between May 8-12.