Massai was a member of the Mimbres/Mimbreños local group of the Chihenne band of the Chiricahua Apache. He was a warrior who was captured but escaped from a train that was sending the scouts and renegades to Florida to be held with Geronimo and Chihuahua.

The Kelvin Grade massacre was an incident that occurred on November 2, 1889 when a group of nine imprisoned Apache escaped from police custody during a prisoner transfer near the town of Globe, Arizona. The escape resulted in the deaths of two sheriffs and triggered one of the largest manhunts in Arizona history. Veterans of the Apache Wars scoured the Arizona frontier for nearly a year in search of the fugitives, by the end of which all were caught or killed except for the famous Indian scout known as the Apache Kid.