[X] Keeping this mission as covert as possible gives the highest chance of success for stopping whatever they have planned. Rig this device for detonation, remote detonator for primary with secondaries tied to motion sensors to detonate the device should anything approach it and risk discovering the sabotage. Make for the dig site to prevent the third device from being deployed, with the fallback of detonating this device should that fail. Added benefit of keeping us as far away from any sympathetic explosions as possible.