Two astronauts ran into difficulty while installing a new antenna during a spacewalk Thursday outside the International Space Station.
The two Russian astronauts, Alexander Skvortsov and Oleg Artemiev were breathing heavily as they dealt with difficult clamps and latches. Mission Control near Moscow reminded them to take frequent breaks.
"Resting is most important," Mission Control told them.
Two hours into the spacewalk, the spacewalkers, out on their first walk, still had not secured the antenna.
"We almost have it. Almost there," one of the spacewalkers said as the work continued.
Two of the three locks latched properly, but they had to use a zip-tie to secure the third.
Six men currently live on the space station. The crew is made up of three Russians, two Americans and one German. The Americans are supposed to venture out on NASA-led spacewalks in August. Skvortsov and Artemiev also have another spacewalk scheduled for August.