Philip hums softly. "Well, you can't send matter through time. It just can't be done. But you can send energy through time, it's not under the same restraints of physics. There's the Director, it does all the calculations, work out who needs to go where and when and when needed or possible, a team is deployed. Sometimes select specialists are trained and sent for singular missions, or for select work. There's a team of doctors, D-Unit, who save lives that would otherwise be impossible to save. But most teams are like mine, five individuals sent back into chosen hosts at the moment of their death."

He turns to Kyle, spreading his arms. "This? Is Philip Pearson. I inherited his body when I arrived in the 21st, twelve seconds before he died of the heroin overdose he was about to give himself.