Also, here's the exact numbers for what I was talking about earlier:
The project was initially granted funding for 300 candidates, though funding was later reduced to half this number.[4] By 2517, 150 suitable candidates had been identified through DNA gathered from the UNSC's Outer Colony vaccination program, though funding had been further reduced to support only half that number. 75 children, all around six years old and of both sexes, were kidnapped.

