This series is a topical regrouping of the separate industry categories. Defense capital goods industries include: small arms and ordnance; communications equipment; aircraft; missiles, space vehicles, and parts; ships and boats; and search and navigation equipment.
Source: US. Bureau of the Census
US. Bureau of the Census, Value of Manufacturers' Unfilled Orders for Capital Goods: Defense Capital Goods Industries [UDEFUO], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/UDEFUO, May 27, 2016.