Posey is still not used to having no hair.
"Took one treatment of chemo here and it all fell out at one time," he said.
Which is why he was reluctant to go on camera and instead let his wife, Hollie, tell his story.
"He was diagnosed on September 27th, 2010 with multiple myeloma stage four," she said.
The couple has been married more than 30 years and have two children, who are both back in Texas where the family is from.
Even though they are far from loved ones they have found joy over the last six months spent here in Arkansas.
"We've been to Petit Jean, Pinnacle," said Hollie. "There's not a place in Little Rock that's not absolutely beautiful...And everywhere we go not one person has said one wrong word to us," she added. "They've been so good to us."
Halfway through our interview, Mark gets enough strength to say a few words.
"UAMS has given me a lot of hope," he said. "They're great compared to what I was getting in Texas."
Mark and Hollie compare the treatment they've been getting in Arkansas to winning the lottery.
"You don't meet people like this everyday," Mark said. "That care... and takes care of you."
And they have something special planned for Christmas.
Mark's first stem cell transplant to hopefully cure him of his cancer.
When we asked if there was anything he'd like to say?
"Y'all have a Merry Christmas everybody," he said.
Kind words to everyone at home, the Posey's said they've been so warmly welcomed that they plan on making it their permanent home.
Anyone wanting to reach out to the family can do so by emailing them at firstname.lastname@example.org