"When determining whether jurisdiction exists, courts must look to the plaintiff's allegations as mere evidence on the issue, and may consider evidence outside the pleadings." Briley v. United States, No. 1:16-cv-505, 2016 WL 5402216, at *4 (E.D. Va. Sept. 26, 2016). In considering a Rule 12(b)(6) motion, the Court may likewise consider attachments to the complaint.