Powering On News Today : Breaking News, Live Updates & Top Stories | Vimarsana

on the front line in eastern ukraine, a special report as ukrainian forces attempt to retake parts of the donbas. the threat here isn'tjust the artillery you can hear. it also these landmines, all along this pathway. on patrol in pakistan, the rescue workers trying to help thousands of people stranded after the devastating floods. and powering on, serena williams delays her retirement from tennis as she makes it through to the third round of the us open. and coming up on the bbc news channel — its transfer deadline day. we'll have the latest big movers, as chelsea agree to sign bar...

Hours. >> we're holding our own now. so we're happy. >> david merchant is charting the best course he can, but conditions are not what he'd hoped. >> well, it's flat calm for a sailor, but for a swimmer, it's rough. we could have done with a longer flat or calm patch, which we didn't get. we're hoping the wind's going to go down. >> it was really beautiful when we started and then it got choppy pretty quickly. >> bonnie stoal's eyes never leave her best friend. >> i feel bad for her. it's tough out there. but i feel good that she's powering on. >> powering on requires near-superhuman efforts. ...

Nearly 12 hours. >> we're holding our own now so we're happy. >> david marchand is charting the best course he can but conditions are not what he'd hoped. >> well, it's flat calm for a sailor, but for a swimmer it's rough. we could have done with a longer, flatter current, which we didn't get. we're hoping the winds are going to go down. >> it was beautiful when we started and it got choppy quickly. >> barbara stoll's eyes never leave her best friend. >> i feel bad for her out there but i feel good she's powering on. >> powering on requires near super human effort. now diana's body is in survi...

We could have done with a longer, flatter current, which we didn't get. we're hoping the winds are going to go down. >> it was beautiful when we started and it got choppy quickly. >> barbara stoll's eyes never leave her best friend. >> i feel bad for her out there but i feel good she's powering on. >> powering on requires near super human effort. now diana's body is in survival mode, diverting blood to essential organs, the heart, the lung, the brain and to the muscles propelling her through the water with every stroke. she's likely burning 700 calories an hour now. >> her stroke is not changi...