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George Diller/STS-132 Launch Commentator:  From Launch Complex 39 at the Kennedy Space Center in Florida,

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this is Shuttle Launch Control at T-3 hours and holding.

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We are now about to enter the final five hours of the countdown for the launch of Atlantis on mission STS-132.

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The countdown is being controlled from 
Firing Room 4 at the Launch control Center,

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and we are on schedule for liftoff, targeted for 2:20 p.m. Eastern time.

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This is the 132nd launch of the Space Shuttle Program, the 32nd launch of space shuttle Atlantis,

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and the 34th shuttle flight to the International Space Station.

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This will be a 12-day mission with a landing 
at Kennedy Space Center, currently planned for May 26 at 8:44 a.m.

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There are six astronauts who will shortly be aboard Atlantis en route to a rendezvous with the International Space Station.

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There are three planned EVAs, or spacewalks, during the mission that will last approximately six hours during

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the one-week period that Atlantis will be docked with the International Space Station.

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The launch countdown began here in Firing 
Room 4 of the Launch Control Center at 4 
p.m. on Tuesday afternoon.

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There are 70 hours, 15 minutes in the countdown, including built-in holds leading to the opening of the launch window.

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There are two remaining planned built-in 
holds to come in the countdown today:

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a 10-minute hold at the T-20 minute mark at 1:05 p.m.

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and a 40-minute hold at the T-9 minute mark at 1:26 p.m.

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And in this current built-in hold at T-3 hours, we have one hour and 22 minutes remaining in the hold.

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The retraction of the gantry-like rotating 
service structure from around Atlantis was

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around 5:29 p.m. on Thursday, yesterday afternoon.

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After that time, switches in the cockpit were configured for launch by astronaut personnel aboard Atlantis.

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And yesterday afternoon, there was also a final stowage of time-critical items that the crew will use during the

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mission as well as the science experiments placed aboard the middeck.

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And then personnel began to be cleared 
from the launch pad, and the orbiter's

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cryogenic fuel cells were activated, just 
before midnight.

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With one hour, 18 minutes, 47 seconds 
remaining in this planned, built-in hold, we're 
at T-3 hours and holding.