Full-year segment revenue increased 14% from strong growth in all three businesses with an overall book-to-bill of 1.10. Tactical revenue grew 14%, with DoD up 31% and international up 3%, and funded backlog increased by 16% to $1.1 billion. Segment operating margin expanded 30 bps to 30.0%.

Electronic Systems

	($ millions)	Fourth Quarter										Full Year
		FY 2019				FY 2018				Change		FY 2019				FY 2018				Change
	Revenue	$	728			$	636			14%		$	2,583			$	2,365			9%
	Operating income	$	144			$	118			22%		$	499			$	432			16%
	Operating margin	19.8		%		18.6		%		120bps		19.3		%		18.3		%		100bps

Fourth quarter revenue increased 14% from sustained strong growth on long-term platforms – F-35, F/A-18 and F-16, partially offset by the UAE Emirates Land Tactical System program transition timing. Operating income grew 22% to $144 million, and margin expanded 120 bps to 19.8%, driven by higher volume and strong operational performance.