Task: Translation
Input (Chinese): 观察员对轰炸机能够成功攻击总部这样一个备受瞩目、戒备森严的目标表示关注，特别是考虑到该建筑靠近塔尔贝拉大坝发电机，这被认为是一项重要的战略资产。
Output (English): Observers have expressed concern at the fact that the bomber was able to successfully attack such a high-profile and heavily guarded target as the headquarters, especially considering the building's close proximity to the Tarbela Dam generator, considered an important strategic asset.