Brian M. McKeon, department head for natural sciences in Penn College's School of Integrated Studies, and two of his four sons are in the play, "Cheaper by the Dozen," which opens Friday at the Community Theatre League, 100 W. Third St. McKeon plays the part of Dr. Burton; his oldest son, Brian Jr, is cast as Fred; and his youngest son, Kaleb, portrays Jackie. The show will be presented at 7:30 p.m. this Friday and Saturday and from Nov. 12-14, and at 2 p.m. Nov. 15.Brian M. McKeon, department head for natural sciences in Penn College's School of Integrated Studies, and two of his four sons are in the play, "Cheaper by the Dozen," which opens Friday at the Community Theatre League, 100 W. Third St. McKeon plays the part of Dr. Burton; his oldest son, Brian Jr, is cast as Fred; and his youngest son, Kaleb, portrays Jackie. The show will be presented at 7:30 p.m. this Friday and Saturday and from Nov. 12-14, and at 2 p.m. Nov. 15.