Take out these communication towers, but be mindful of their defenders.

Mission #3: Silence//Death
Be sure to pick up your first two squadmates before heading out on the mission. This time, you'll need an ECM jammer. Head to nav point 001 and destroy all three communication towers, but watch out for reinforcements in the form of two talons and minotaurs. Proceed to nav point 002 and lay waste to the base there, but be on the watch for its own defenders.

Traditionally, you can destroy all the human hercs running around (which will help you accomplish a secondary objective), or you can just make a run for it, avoiding the hercs altogether.

Mission #4: Inefficiency >> Death//Harm
Your objectives will change right after the mission starts, so don't expect to blow up any communication facilities. Instead, you must safeguard your mobile nexus from human attack. Head as fast as you can to the new nav point 001, blasting the basilisk that stands in your way with concentrated fire from your squadmates.

As you arrive, the nexus' escorts are busily engaging two minotaurs, which you should quickly dispatch. A second wave features a basilisk and a disrupter tank (don't let it ram you), and a third wave will bring along three talons.

Next: Missions #5 and #6