This is so even though the informant upon whose information DEA Phoenix's tip was based is unnamed in the warrant affidavit and merely described as "credible and reliable." See United States v. Shaw, 396 Fed. Appx. 145, 146 (5th Cir. 2010) (affidavit containing tips from confidential informants supported magistrate's finding of probable cause when the affidavit described the informants as having provided information "proven true, correct, and reliable in past"); United States v. McKnight, 953 F.2d 898, 904-05 (5th Cir. 1992) ("Constable's assertion that the confidential informant was 'reliable' and had 'furnished him with information in the past that has proved to be reliable and true' provided the magistrate with sufficient indicia of the reliability and veracity of the informant's tip."); United States v. Satterwhite, 980 F.2d 317, 321 (5th Cir. 1992) (approving of an affidavit that "provided the magistrate with facts, and not mere conclusions"); Christian v. McKaskle, 731 F.2d 1196, 1200 (5th Cir. 1984) (noting that "a factual basis for the credibility of an informant can be supplied by an explicit claim of past reliability[.]") (internal quotation marks omitted). Glover does not discuss the independent source doctr