Long before his bleak final years, when he struggled with mental illness and lived mostly on the streets, Victor Carl Honey joined the Army, serving honorably for nearly a decade. And so, when his heart gave out and he died alone 30 years later, he was entitled to a burial with military honors.

Instead, without his consent or his family’s knowledge, the Dallas County Medical Examiner’s Office gave his body to a state medical school, where it was frozen, cut into pieces and leased out across the country.

A Swedish medical device maker paid $341 for access to Honey’s severed right leg to train clinicians to harvest veins using its surgical tool. A medical education company spent $900 to send his torso to Pittsburgh so trainees could practice implanting a spine stimulator. And the U.S. Army paid $210 to use a pair of bones from his skull to educate military medical personnel at a hospital near San Antonio.

In the name of scientific advancement, clinical education and fiscal expediency, the bodies of the destitute in the Dallas-Fort Worth region have been routinely collected from hospital beds, nursing homes and homeless encampments and used for training or research without their consent — and often without the approval of any survivors, an NBC News investigation found.