High up at the barren, lunar peak, while the Indians and mules waited behind in the mist, Humboldt in his black boots and yellow velvet jacket stepped to the rim of Pichincha's crater.

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He appealed for witnesses who saw a blue lorry travelling from the Longstore towards Salerie Corner or a male cyclist wearing a yellow reflective jacket on a black bike travelling in the same direction.

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Investigators in the Bryant case have a bank video of a man wearing a yellow jacket -- believed to have belonged to John Bryant -- while using the Bryants' ATM card.

CNN: Man charged in hiker's death suspected in other cases

Officers said they were looking for a man in the area wearing a sleeveless, yellow high-visibility jacket.

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Aspire put a team of 15 on the Georgia Tech sales effort, which also includes Yellow Jacket basketball.

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Witnesses who saw Hilton on the trail with Emerson on the day she disappeared said he was wearing a yellow jacket, authorities have said.

CNN: Man charged in hiker's death suspected in other cases

He is believed to be wearing a black hooded Benzini jacket with bright yellow lettering, black ankle boots and a cap with NY on the front.

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"I have some friends who will wear green pants, a pink ribbon belt, yellow shirt, light blue bow tie and navy jacket part of pulling it off is the attitude, " he says.

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