India has designated five indigenous tribal groups in the territory as `` particularly vulnerable '' due to the loss of sustaining resources and customs . 777 of the Indian and Port Blair islands are inhabited . The airport runway in Nicobar is long enough for a Only three dozen . Landing a large aircraft in the highly militarized area without detection unlikely , experts say .
777 of the Indian and Port Blair islands are inhabited . The airport runway in Nicobar is long enough for a Only three dozen . Landing a large aircraft in the highly militarized area without detection unlikely , experts say .