Dan Crawford is keeping his fingers crossed his multiple sclerosis does not flare up while competing in three events at the Invictus Games in Canada.
The 26-year-old lieutenant in the New Zealand Navy from One Tree Point was diagnosed with multiple sclerosis in 2014 after he returned from a three-month tour of duty to Antarctica.
The left side of his body felt numb for six weeks but it faded away. However he has had two relapses since.
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Later this month, Mr Crawford will compete in athletics, indoor rowing and swimming at the Invictus Games in Montreal alongside 550 athletes from 17 countries. The Invictus Games is an international Paralympic-style multi-sport event in which wounded, injured or sick armed services personnel and their associated veterans take part in sports.