Rockets configured with VT safety add which two items to the standard safeties?

• A. VT, 1hrwt
• B. None
• C. VT
• D. 1hrwt

Answer: (A)

When a rocket is configured with Variable Time (VT) safeties, you must add two specific items beyond the standard safeties: the VT safety device itself and the 1-hour wait/verification element (1hrwt). The VT fuze introduces a timing feature, so the safety setup must explicitly include the VT component to control that timing, and it must also include the 1hrwt to enforce a defined waiting period and verification before arming. Using just one of these without the other would leave the timing or verification step incomplete, which is not acceptable for VT-configured rockets. The combination of VT and 1hrwt is the correct pair to ensure proper safety handling.