Complex sentence: To determine whether Davis was killed by Zhang in the absence of gun camera footage, the 4th Fighter Division sent two search teams on February 16 and 18, and they recovered a wreckage of an F-86E, along with Davis' body and his belongings.
Split into simpler sentences: To determine whether Davis was killed by Zhang in the absence of gun camera footage, the 4th Fighter Division sent two search teams on February 16 and 18. They recovered the wreckage of an F-86E, along with Davis' body and his belongings.