S.D. Codified Laws § 23-7-8.12
If a South Dakota resident holds a regular concealed carry permit issued in accordance with § 23-7-7, and is a member of a state National Guard unit, the Armed Forces of the United States, or the Armed Forces Reserves of the United States, and the holder's permit expires during an active duty military assignment or deployment outside the holder's state of residence, the holder may request a renewal form application from the Office of the Secretary of State. The secretary shall prescribe the contents of the application form and any accompanying materials. The application shall be accompanied by documentation of the deployment, including dates and location of the deployment if available for disclosure; an affidavit signed by the holder's commanding officer or unit commander attesting to the identity of the holder and the fact the holder is unable to return to the state to renew; and a copy of a current, valid, government-issued identification card with a photograph of the holder. The secretary shall specify the contents of the affidavit. The holder shall mail the application, containing original signatures in ink, to the sheriff in the holder's county of residence. The sheriff shall conduct the background investigation, including a computer check of available online records and the National Instant Criminal Background Check required under § 23-7-7, within five days of receipt of the military application renewal form. The original signature of the applicant on the renewal form shall serve as the applicant's signature for the temporary permit.
SDCL 23-7-8.12