Aaron Bissell gives his twin brother, Eric, a ride as he pushes his brother's wheelchair outside the Bissell home in Grafton.

Special needs teacher Susan McCullen works on motor skills with the twins.  

Rich Bissell clears fluid from Aaron's tracheostomy tube.

It's dinner time for the twins.

Eric gets a ride aboard "Duchess" during a therapeutic horseback riding program at Holden's White Oak Farm.