>> I FOUND PRETTY >> SOME HEAD SHAKING ACTIONS CAUGHT ON VIDEO. A MAN WALKING UP A DRIVEWAY IN GRABBING A WALKER BELONGING TO A CANCER PATIENT AS ABC. 10 NEWS REPORTER MICHAEL CHEN FOUND OUT. IT'S ONE OF SEVERAL CASES OF ESSENTIAL MEDICAL DEVICES GOING MISSING. >> ONE DAY AFTER SURGERY FOR NECK CANCER. EIGHTY-YEAR-OLD JOHN ADAMS BABY STEPS. LET'S WALK WITH THE HELP OF HIS WIFE NANCY. THAT'S BECAUSE THE NEW WALKER HE HAD BEEN USING VERY LOW LIFE TYPE OF THING TO DO WITH NO CONSCIENCE DISAPPEAR AROUND 01:00PM MONDAY ALONG THE CUL-DE-SAC, 34 STREET AND SOUTH PARK. WHILE THE COUPLE WAS OUT TO LUNCH. SURVEILLANCE VIDEO SHOWS A WHITE CAR DRIVING BY 4 TIMES BEFORE STOPPING IN FRONT OF THE HOUSE. THEY'RE STAYING A MAN EMERGES, WALKED UP THE DRIVEWAY AND MAKES OFF WITH JOHN'S WALKER BEFORE DRIVING OFF. JOHN IS NEEDED THE WALKERS SINCE FRACTURING HIS PELVIS A FEW MONTHS AGO. DO YOU BELIEVE HE THOUGHT? YOU WOULD LEFT IT OUT FOR SOMEONE TO TAKE? NO, ABSOLUTELY NOT. IT WAS ON A PROPERTY HERE. >> HE DIDN'T KNOCK ON THE DOOR TO CHECK. DIDN'T TAKE THE OLD ONE. THE SOLAR WALKER WITH ITS WORN DOWN RUBBER FEET WAS ON THE SIDE OF THE HOUSE. THE NEWER WALKER WAS LEANING AGAINST THIS FAN. I FIND IT PRETTY JOHN, NOT ALONE IN HIS ANGER 2 DAYS PRIOR ALONG ROSECRANS IN POINT LOMA, I PRETTY HAVE SAID, THOMAS, THE LOCKLAND, HIS WIFE RETURNED HOME IN THE AFTERNOON AND FOUND THE WHEELCHAIR THAT HAD BEEN PARKED IN FRONT OF THIS GATE. >> GONE >> WHO COULD DO THAT? I DON'T LIKE THE. >> TO LAC LA DIAGNOSED WITH PARKINSON'S DISEASE BECAME WHEELCHAIR-BOUND A FEW YEARS AGO. >> IT'S OTHER. WE'LL AREA. >> I MYSELF, YOU MUST USE THIS TRAVEL WHEELCHAIR UNTIL INSURANCE PAYS FOR A NEW WHEELCHAIR. BACK IN SOUTH PARK, JOHN PLANS TO SHELL OUT $100 FOR A NEW WALKER AND SOON QUELLING HIS FRUSTRATIONS WILL TAKE LONGER TO STEAL A WALKER FROM SOMEONE WHO MIGHT NEED IT DESPERATELY KIND OF FEELS VIOLATED. MICHAEL CHEN, ABC, 10 NEWS. >> AND THOMAS IS FILING A POLICE REPORT. WE REACHED OUT TO SAN DIEGO POLICE TO FIND OUT IF THEY'VE SEEN A RISE IN THEFTS OF MEDICAL DEVICES. WE'RE WAITING TO HEAR BACK AND MICHAEL COVERS CRIME IN THE COURT SYSTEM. YOU CAN SEND HIM YOUR STORY. IDEAS BY E-MAILING MICHAEL DOT JANET. 10 NEWS DOT