Answer:

ENGR

Answer	Crossword Clue
ENGR	Cal Tech grad
ENGR	MIT grad
ENGR	MIT grad, for ex.

ENGR	Hwy. planner
ENGR	MIT grad, often
ENGR	Art print: abbr.
ENGR	Georgia Tech grad.
ENGR	M.I.T. grad
ENGR	M.I.T. grad, maybe
ENGR	RR employee
ENGR	Tech sch. grad

ENGR	Certain M.I.T. graduate
ENGR	Caltech grad
ENGR	One working on the RR
ENGR	Ga. Tech grad
ENGR	RR worker
ENGR	Caltech sr.'s goal, often
ENGR	Certain B.S. holder
ENGR	Certain Caltech grad: Abbr.

ENGR	M.I.T. grad, often
ENGR	Caltech grad's occ., often
ENGR	Former Caltech sr., perhaps
ENGR	GM worker
ENGR	Caltech grad, perhaps: Abbr.
ENGR	Certain tech sch. grad
ENGR	Rocket scientist, e.g.: Abbr.
ENGR	Career for a sci. major

ENGR	IBM hire, maybe
ENGR	NASA hire
ENGR	Georgia Tech grad., perhaps
ENGR	Georgia Tech grad
ENGR	Certain Caltech grad
ENGR	MIT grad, maybe
ENGR	MIT grad, perhaps
ENGR	Caltech grad, maybe

ENGR	Casey Jones, for one (abbr.)
ENGR	RR train operator
ENGR	Up-front guy for the R.R.?
ENGR	Many an MIT grad
ENGR	Typical Georgia Tech grad (abbr.)