1000 meter hearing

The Space Marine was in their path, hazed by a draw of thick smoke. Scarred siege shield propped in one hand, longsword resting across a huge shoulder guard. Plate dented and scored, even the ornate laurels on the breast. Eyes, slits of amber throbbing in the mauled visor.
Their weapons came up.
‘Where are you going?’ it asked.
Back. To fight,’ said Joseph.
‘Correct,’ it said. ‘That’s what He needs from us.’
‘You… heard me?’
‘Of course. I can hear a heart beating at a thousand metres. Follow me.’

Santurine