Detailed Instructions: This task involves creating answers to complex questions, from a given passage. Answering these questions, typically involve understanding multiple sentences. Make sure that your answer has the same type as the "answer type" mentioned in input. The provided "answer type" can be of any of the following types: "span", "date", "number". A "span" answer is a continuous phrase taken directly from the passage or question. You can directly copy-paste the text from the passage or the question for span type answers. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words. A "number" type answer can include a digit specifying an actual value. For "date" type answers, use DD MM YYYY format e.g. 11 Jan 1992. If full date is not available in the passage you can write partial date such as 1992 or Jan 1992. If you find multiple spans, please add them all as a comma separated list. Please restrict each span to five words.
Q: Passage: However, due to the U.S. Army's recent reorganization, only 4th Squadron remains in active service. 4th Squadron, 10th Cavalry takes its history and lineage from D Troop, 10th Cavalry. In 2000, D Troop, 10th U.S. Cavalry, was reactivated and assigned as the brigade reconnaissance troop for 3rd Brigade Combat Team, 3rd Infantry Division at Fort Benning, Georgia. D Troop, 10th Cavalry was deployed with 3/3 ID to Iraq in 2003, and was deactivated upon redeployment in 2004. It was reactivated in October 2007 at Fort Carson, Colorado, replacing the 2nd Squadron, 9th Cavalry regiment, as the 4th Squadron, 10th Cavalry Regiment with A, B, C, and HQ Troops as the reconnaissance squadron for 3rd Combat Brigade Team of the 4th Infantry Division. The 4th Squadron deployed to Iraq with the BCT from December 2007 to February 2009, and again in March 2010. The Squadron deployed to Jordan in 2015 in support of Operation Spartan Shield. In February 2016, Delta Tank Company from 1st Battalion, 8th Infantry Regiment moved to 4th Squadron, 10th Cavalry Regiment to be assigned as Dakota Troop. As of February 2016, 4th Squadron, 10th Cavalry Regiment is the only current active unit of the 10th Cavalry Regiment.
Question: How many years passed between the 10th Cavalry being deactivated in 2004 and being reactivated?
Answer type: Number
A:
3.