Recentness of training.
CFR · 2024-01-01 · US · Title 10
The training and experience specified in Subparts B, D, E, F, G, and H of this part must have been obtained within the 7 years preceding the date of application or the individual must have had related continuing education and experience since the required training and experience was completed.
official document · source cfr-2024 · id 10:§ 35.59