Complex sentence: It's not however certain that anyone has seen the after-action report however, since its nowhere to be found, however the free lancer Ed Darack claims to have seen it but has so far not shown any proof.
Split into simpler sentences: It's not certain that anyone has seen the after-action report, however, since it's nowhere to be found. However the free lancer Ed Darack claims to have seen it but has so far not shown any proof.