and nonphotonic electrons, which precludes perturbative predictions predi- cated on gluon bremsstrahlung radiation as the dominant energy loss channel. Near qualitative agreement results from including collisional energy loss and integrating over the fluctuating jet pathlengths. Another conjecture for heavy quark energy loss comes via explicit con- struction using the AdS/CFT correspondence; the momentum loss of a hang- ing dragging string moving through the deconfined plasma leads to qualitative agreement with heavy quark decay data. We propose a robust test to experi- mentally differentiate these two competing ideas: the ratio of charm to bottom suppression rapidly approaches 1 for pQCD but is independent of momentum and well below 1 for AdS/CFT. Finally as a warmup problem to calculating the photon bremsstrahlung associated with jet energy loss we quantify improvements to the perturbative estimates of the Ter-Mikayelian effect. By not neglecting the interference from away-side jets we find agreement with our results and the classical limit, regu- late divergences at low momenta, and note the importance of terms neglected in previous in-medium radiative energy loss derivations.