Hezbollah has denied responsibility for the incursion into Israeli airspace.
Hagel has already visited Jordan and will follow with stops in Saudi Arabia and the United Arab Emirates.
The Senate Majority Leader says another potential ricin-laced letter has been discovered at an Air Force base in Washington, D.C.
The Army personnel will consist of largely planners, replacing a similar number of United States forces that have been in Jordan for several months.
Hagel will travel to Israel, Jordan, Saudi Arabia, Egypt and the United Arab Emirates.
Defense Secretary Chuck Hagel promised his Israeli counterpart, Defense Minister Ehud Barak, in March that the DoD will continue to support the defense missile system.
Veteran advocacy groups and lawmakers were upset by the creation of the new medal since it would have precedence over other traditional awards, including the Purple Heart.
Hagel will be making his first trip to Israel since taking the reins at the Pentagon in late February.
Hagel said that when explosive devices are used it is a clear act of terror and vowed that an investigation will determine whether those responsible were foreign or domestic.
Hagel dismissed some lawmakers’ assertion that he received the Secretary position only to make drastic cuts to the defense budget.