Experience matters┬áIn the current difficult construction climate, itÔÇÖs useful to have experienced hands on board, as Jeff Daniels learns. In one persona or another, the Callahan family has been building things for over a half century, since the time the present presidentÔÇÖs father set up shop in Bridgewater, Massachusetts, in 1954ÔÇöprimarily as a builder of residential properties to cater to the baby boom generation.So it follows that the various organizations within the Callahan Group have prospered through many a period of boom but more importantl