Myers was last seen wearing black and blue plaid pajamas, a white t-shirt and blue and white tennis shoes, police say.
Wednesday, Myers' family, with the support of The National Action Network, announced a joint search with North Charleston police Friday.
His family called on the civil rights group for help, after expressing disappointment with how North Charleston police handled the search.
Ladson says she requested police canines and helicopters be used when family members first reported Myers missing, but was told those resources were not available.
"It was told to me that it's not like what you see on television," she said.
North Charleston Police Deputy Chief Scott Deckard said Wednesday, officers searched with canines November 14th, and on-foot continuously since Myers' disappearance.
Deckard says the department planned Friday's search in advance of the Wednesday press conference, after speaking with investigators and Myers' family.
According to sister, Alethia Ladson, a neighbor in their apartment complex saw Myers days after he was first reported missing.
"I feel, if that search had taken place, between the time I reported him and the time he was sighted on Thursday, he would've had Thanksgiving dinner," she said.
"There was no turkey for us this year. There will be no tree for us this year, if he's not returned home."
The public is invited to join in on the search, which starts at 10 A.M. Friday, behind the Festival Center on Ashley Phosphate Road.
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