Father takes search into his own hands, says police haven't done enough for his missing Black son

“My son was my mission," said David Robinson.

Daniel Robinson was last seen 50 miles southwest of Phoenix on June 23. He is a geologist and was testing groundwater at a well site in a remote part of the desert when he went missing.

Since then, his father, David Robinson, has been desperately searching for answers to find his 24-year-old son.

"I only imagine every time I look out there, my son's somewhere hoping that his dad will come find him, you know?" said David Robinson.

Despite the local Buckeye Police Department launching an extensive aerial and 70-square-mile ground search, the Robinson family say they feel let down by what they say is a lack of urgency and motivation by authorities in finding Daniel.