within about 3-4 minutes. but it was devastating. >> reporter: did you see anyone yourself who had been injured or were you too far away from that foyer area you were describing? >> we didn't see anybody. just traumatized people. we didn't see it but you could smell it. we only heard one explosion. >> shepard: one of the early witnesses talking to sky news the last hour and a half or so. on the phone with us is aaron mcdougle. thank you for joining us. what did you see and hear? >> we only heard one explosion as well. we were on the far side. >> shepard: erin mcdougle. >> caller: over from where the explosion happened. it was just a big rush. feels like a big blur now. we just heard one big shaking explosion. from the left side of the hall. and then just everybody running