Odis Jackson petitions for review of the Railroad Retirement Board’s (Board’s) final decision denying his application for an annuity increase. Having carefully reviewed the record, see Worms v. Railroad Retirement 13d., 255 F.3d 502, 505 (8th Cir. 2001) (standard of review), we affirm. Jackson has identified no legal authority— and we have found none — to support his position that he is entitled to an annuity increase based on his minor grandson retroactive to February 1993. Accordingly, we affirm the decision of the Board. See 8th Cir. R. 47B.