Mark Williams unexpectedly left his home in Texarkana, Texas on the evening of November 29, 2014. He is a cancer patient, on medication, and may be unaware of his current situation.
He was driving a 2010 White Toyota Tundra Crew Max truck, Texas license plate DDZ9707.
His phone was found by the road at the Flying J Truck Stop at I-30 and Highway 108 near the Texarkana Airport. He is likely traveling with a tan leather backpack, and could be anywhere in Texas, Arkansas or Louisiana.