NASHUA – Every day when Timothy LeBrun gets off the school bus, he hugs the woman who watches the students from the front seat. With the help of his mother, Tracy Caron, the 8-year-old makes his way down the stairs of the bus for special-needs students and then past the flower beds in front of his Abbott Street house – the lights on the heels of his sneakers blinking the whole way. He almost always wears his “SpongeBob SquarePants” hat, and if he’s lucky he gets to wear his blue “SpongeBob” shirt, with the words “Whatever Dude” on it. When...