Benjamin Carlisle Tallmadge, known as Ben, was 23 when he was last seen on March 21, 2002, in Tucson, Arizona. His father dropped him off at a residence near Ina Road and Interstate 10; that drop-off is the last confirmed sighting. He is described as 5 feet 9 inches, about 160 pounds, with brown hair and brown eyes.

Details about his plans that day, who he intended to meet, and what happened after the drop-off remain unclear. An official missing person report was not filed with the Tucson Police Department until October 31, 2002. Over the years the case has produced few leads and his family continues to seek answers.

If anyone remembers seeing Ben around Ina Road and I-10 on or after March 21, 2002, please share what you know.