The control tower at the Shreveport Downtown Airport will be closed on April 7. The closure comes as the Federal Aviation Administration seeks to cut costs by some $600 million for the remainder of Fiscal Year 2013, the result of sequestration that went into effect on March 1 after Congress failed to pass a budget. When the Shreveport Airport Authority first learned of the possibility last week, airport management sent a letter to the FAA . Shreveport Regional Airport was also on an FAA list released last week of facilities where FAA-staffed towers could have their overnight shifts eliminated. There has been no word yet on which of those facilities will make the final list of those losing overnight shifts, or whether the FAA will move forward with that part of the cost-cutting plan at all.