Case: 24-2142 Document: 29 Page: 1 Filed: 11/18/2025

NOTE: This disposition is nonprecedential.

United States Court of Appeals for the Federal Circuit ______________________

LINDA LOCK, SUBSTITUTED FOR REGINALD L. LOCK, SR., Claimant-Appellant

v.

DOUGLAS A. COLLINS, SECRETARY OF VETERANS AFFAIRS, Respondent-Appellee ______________________

2024-2142 ______________________

Appeal from the United States Court of Appeals for Veterans Claims in No. 23-1858, Chief Judge Michael P. Allen. ______________________

Decided: November 18, 2025 ______________________

LINDA LOCK, Little Rock, AR, pro se.

MEREDYTH COHEN HAVASY, Commercial Litigation Branch, Civil Division, United States Department of Jus- tice, Washington, DC, for respondent-appellee. Also repre- sented by WILLIAM JAMES GRIMALDI, PATRICIA M. MCCARTHY, YAAKOV ROTH; CARLING KAY BENNETT, BRIAN Case: 24-2142 Document: 29 Page: 2 Filed: 11/18/2025

2 LOCK v. COLLINS

D. GRIFFIN, Office of General Counsel, United States De- partment of Veterans Affairs, Washington, DC. ______________________

Before DYK, LINN, and HUGHES, Circuit Judges. PER CURIAM. Reginald L. Lock, Sr., an Army veteran and the origi- nal appellant in this case, was denied service-connected benefits. He appealed to the Board of Veterans’ Appeals, which held Mr. Lock failed to establish that his disabilities were service connected. The United States Court of Ap- peals for Veterans Claims affirmed, and Mr. Lock appealed to this court. Mr. Lock died while his appeal was pending, and his surviving spouse, Linda Lock was substituted as appellant. Mrs. Lock asks us to review her husband’s med- ical records and reconsider whether his disabilities are ser- vice connected. Because Mrs. Lock challenges only factual findings and the application of law to fact, we dismiss for lack of jurisdiction. I Mr. Lock served honorably in the U.S. Army from July 1975 to September 1975. Although his military medi- cal entrance exam was negative for any pertinent disabili- ties that would exclude him from service, he was ultimately separated from service for pre-existing sickle cell disease. He subsequently sought a service connection for his sickle cell disease and later-developed complications. Beginning in 1976, the regional office and the Board have denied Mr. Lock’s claims. They have repeatedly con- cluded his sickle cell disease predated his service and was not aggravated by his service beyond the normal progres- sion of the disease. And without a service connection for his sickle cell disease, his claims for conditions secondary to his sickle cell disease were also denied. Case: 24-2142 Document: 29 Page: 3 Filed: 11/18/2025

LOCK v. COLLINS 3

Relevant here, the Board again denied entitlement to a service connection for Mr. Lock’s sickle cell disease in Jan- uary 2023 after previously remanding for further medical evaluation. Mr. Lock, who was represented by counsel be- fore the Veterans Court, appealed arguing that the Board failed to comply with a prior joint motion for remand (JMR) and that it relied on inadequate medical examinations. The Veterans Court reviewed the Board’s decision, concluded the Board had complied with the JMR and appropriately considered adequate medical opinions, and affirmed. S.A. 4–9. 1 Mr. Lock timely appealed to this court. II Our jurisdiction to review decisions by the Veterans Court is limited. Wanless v. Shinseki, 618 F.3d 1333, 1336 (Fed. Cir. 2010). We have exclusive jurisdiction to review and decide challenges to the validity or interpretation of any statute or regulation, and to interpret constitutional and statutory provisions if presented and necessary to the decision. 38 U.S.C. § 7292(c). But absent a legitimate con- stitutional issue, we cannot review challenges to the Veter- ans Court’s factual determinations or its application of law to fact. 38 U.S.C. § 7292(d)(2); see also Wanless, 618 F.3d at 1336. On appeal, Mrs. Lock raises only factual issues that are outside our jurisdiction. She does argue the Veterans Court’s decision involves the validity or interpretation of a statute or regulation and constitutional issues. See Appel- lant’s Br. 1–2 (checking “Yes” for items 2 and 3). But we look to the substance of the issue presented rather than a party’s characterization of the question when evaluating our jurisdiction. See Helfer v. West, 174 F.3d 1332, 1335

1 S.A. refers to the Supplemental Appendix filed by the government. Dkt. No. 18. Case: 24-2142 Document: 29 Page: 4 Filed: 11/18/2025

4 LOCK v. COLLINS

(Fed. Cir. 1999). And Mrs. Lock’s allegations of error here are limited solely to factual issues. For example, Mrs. Lock argues basic training caused Mr. Lock’s condition to worsen, that his medical records show sickle cell disease as his reason for discharge, and that his sickle cell disease is service connected. Appellant’s Br. 1–2. Mrs. Lock requests we re-review Mr. Lock’s medical records and reconsider his denial of a service connection. Appellant’s Br. 2. This ech- oes Mr. Lock’s request to this court. See A.A. 4 (“I ask you judges to review my medical records and reconsider their original decision.”). 2 Mrs. Lock does not contend the Veter- ans Court articulated an incorrect legal standard or inter- preted any statute. Rather, her argument is that the Board and Veterans Court erred when they determined Mr. Lock’s sickle cell disease was not service connected. We may not review that determination: We lack jurisdiction to reweigh the evidence of Mr. Lock’s disabilities and whether they are service connected. See 38 U.S.C. § 7292(d)(2); Maxson v. Gober, 230 F.3d 1330, 1333 (Fed. Cir. 2000) (“The weighing of this evidence is not within our appellate jurisdiction.”). And because we lack jurisdiction to review Mrs. Lock’s factual challenges, we must dismiss Mrs. Lock’s appeal for lack of jurisdiction. III We have considered the parties’ remaining arguments and find them unpersuasive. For the foregoing reasons, we dismiss for lack of jurisdiction. DISMISSED COSTS No costs.

2 A.A. refers to the materials attached to Mrs. Lock’s informal brief. Dkt. No. 19.