reporter: the laughtons are disabled, barry is a veteran and has heart issues. >> we know that they're targeting us. reporter: saturday night their son-in-law staked out in his car to see if the person responsible would show up. but that didn't happen. >> to see something like this continually happen to them over the dogs of a week is just very infuriating. reporter: sunday is the lawton's 35th anniversary, barry wants to take his wife out to celebrate, but this cruel act ruined their plans, they say they can't afor to keep paying their deductibles. >> to be hit with a $1,000 hit just before christmas, it's bad. reporter: so derry police are investigating. could help them, you're asked to give them a call. mike cronin, wmur news 9. anchor: thank you. tonight three people have life threatening injuries after a car crashed through a guard rail on 93 then landed in trees off the highway. one firefighter says this is one of the most difficult rescues he's ever faced. the crash happened in salem around 5:30 this morning just north of the massachusetts state line. crews arrived after people