Each end of the MK-124 will burn for about _________ seconds.

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Multiple Choice

Each end of the MK-124 will burn for about _________ seconds.

Explanation:
Two-ended signaling flares are built so each end burns for a fixed time to maximize visibility. For the MK-124, each end burns about 20 seconds, giving a total of roughly 40 seconds of signaling when both ends are used. The question asks for the duration per end, so 20 seconds is the correct value. Shorter or longer per-end times would not match the standard burn performance for this device.

Two-ended signaling flares are built so each end burns for a fixed time to maximize visibility. For the MK-124, each end burns about 20 seconds, giving a total of roughly 40 seconds of signaling when both ends are used. The question asks for the duration per end, so 20 seconds is the correct value. Shorter or longer per-end times would not match the standard burn performance for this device.

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