washington — Defense Secretary Lloyd Austin is sending additional bomber aircraft and Navy warships to the Middle East to bolster the U.S. presence in the region as an aircraft carrier and its warships are preparing to leave, U.S. officials said Friday. Austin ordered several B-52 Stratofortress bomber aircraft, tanker aircraft and Navy destroyers to deploy to the Middle East, according to four U.S. and military officials who spoke on the condition of anonymity to discuss troop movements. The military moves come as Israel’s wars with Hamas in Gaza and Hezbollah in Lebanon rage, including a retaliatory strike on Iran a week ago that likely damaged a base that builds ballistic missiles and launches rockets as part of Tehran’s space program. The U.S. is pressing for cease-fires, while repeatedly saying it will defend Israel and continue to protect the American and allied presence in the region, including from Yemen-based Houthi attacks against ships in the Red Sea. The long-range nuclear-capable B-52 bomber has been repeatedly deployed to the Middle East in pointed warnings to Iran and it is the second time this month that strategic U.S. bombers will be used to bolster U.S. defenses in the region. In October, B-2 stealth bombers were used to strike underground Houthi targets in Yemen. Officials did not provide the number of aircraft and ships that will move into the region. The shifts are likely to result in an overall decrease in the total number of U.S. service members in the region, largely because an aircraft carrier contains as many as 5,000 sailors. But the addition of bomber aircraft beefs up U.S. combat strength. There have been as many as 43,000 U.S. forces in the region recently. According to a U.S. official, the USS Abraham Lincoln aircraft carrier and the three Navy destroyers in its strike group are scheduled to leave the Middle East by midmonth and return to their home port in San Diego. When it departs, there will be no aircraft carrier in the Middle East for a period of time, the official said. Officials declined to say how long that gap would last. Military commanders have long argued that the presence of an aircraft carrier strike group, with its array of fighter jets, surveillance aircraft and heavily armed warships, is a significant deterrent, including against Iran. To make up for that gap, Austin is ordering the deployment of other Navy destroyers to the region. Those destroyers, which are capable of shooting down ballistic missiles, would come either from the Indo-Pacific region or Europe, the official said. Eventually, it is expected that the USS Harry S. Truman aircraft carrier and its three warships will move to the Mediterranean Sea, but they won’t get there before the Lincoln departs. The Truman strike group has been in the North Sea, participating in a NATO military exercise. The Lincoln and two of its destroyers are now in the Gulf of Oman, and its third destroyer is with two other warships in the Red Sea. There are also two destroyers and the Marine amphibious ready group — which includes three ships — in the Mediterranean Sea.