Deletion of Challenger, Gray & Christmas

Comment: Passes  per the many reliable independent sources provided at this discussion
Stance: keep
Cited policy: Wikipedia:Notability (WP:SIGCOV)

Comment: I am unable to locate a single reference that meets the criteria for establishing notability. None of the references appear to have any in-depth information on the company nor any independent content. Topic fails GNG and 
Stance: delete
Cited policy: Wikipedia:Notability (WP:NCORP)