NASA astronaut Don Pettit speaks with Trey Carlson, chief of staff for NASA’s Kennedy Space Center, left, John McCullough, deputy associate administrator for integration in NASA’s Exploration Systems Development Mission Directorate, and Janet Petro, director of NASA’s Kennedy Space Center during NASA’s Day on the Hill, Tuesday, Sept. 16, 2025, at the Hart Senate Office Building in Washington. Photo Credit: (NASA/Joel Kowsky)

JSC2010-E-046795 (5 April 2010) --- John McCullough (right), chief of the Flight Director Office; Janet Kavandi, deputy director, Flight Crew Operations; and flight director Bryan Lunney are pictured in the space shuttle flight control room in the Johnson Space Center's Mission Control Center during launch countdown activities a few hundred miles away in Florida, site of space shuttle Discovery's STS-131 launch.

JSC2010-E-019040 (8 Feb. 2010) --- Brent Jett, director, flight crew operations, watches a monitor at his console in the space shuttle flight control room in the Mission Control Center at NASA's Johnson Space Center during launch countdown activities a few hundred miles away in Florida, site of space shuttle Endeavour's STS-130 launch. John McCullough (seated), chief of the flight director office, is at right.

JSC2010-E-046782 (5 April 2010) --- An overall view of the space shuttle flight control room in the Johnson Space Center's Mission Control Center during launch countdown activities a few hundred miles away in Florida, site of space shuttle Discovery's STS-131 launch. John McCullough, chief of the Flight Director Office, is visible at right foreground.

JSC2011-E-046799 (19 May 2011) --- Flight director Gary Horlacher (left) and John McCullough, chief of the Flight Director Office, monitor data at the flight director console in the space shuttle flight control room in the Mission Control Center at NASA's Johnson Space Center during STS-134 flight day four activities. Photo credit: NASA

JSC2010-E-046805 (5 April 2010) --- John McCullough, chief of the Flight Director Office; and Janet Kavandi, deputy director, Flight Crew Operations, watch television screens at the Mission Operations Directorate (MOD) console in the space shuttle flight control room in the Mission Control Center at NASA's Johnson Space Center during launch a few hundred miles away in Florida, site of space shuttle Discovery's STS-131 liftoff.

JSC2011-E-046798 (19 May 2011) --- NASA astronaut Megan McArthur, spacecraft communicator (CAPCOM); flight director Gary Horlacher (center) and John McCullough, chief of the Flight Director Office, are pictured in the space shuttle flight control room in the Mission Control Center at NASA's Johnson Space Center during STS-134 flight day four activities. Photo credit: NASA

JSC2009-E-118884 (11 May 2009) --- Brent Jett (standing), director, flight crew operations; and John McCullough (seated), chief of the flight director office, are pictured in the space shuttle flight control room in the Mission Control Center at NASA's Johnson Space Center during launch countdown activities a few hundred miles away in Florida, site of Space Shuttle Atlantis? scheduled STS-125 launch to service the Hubble Space Telescope. Liftoff was on time at 2:01 p.m. (EDT) on May 11, 2009 from launch pad 39A at NASA's Kennedy Space Center.

JSC2009-E-118821 (11 May 2009) --- Brent Jett (standing), director, flight crew operations; and John McCullough (seated), chief of the flight director office, are pictured in the space shuttle flight control room in the Mission Control Center at NASA's Johnson Space Center during launch countdown activities a few hundred miles away in Florida, site of Space Shuttle Atlantis? scheduled STS-125 launch to service the Hubble Space Telescope. Liftoff was on time at 2:01 p.m. (EDT) on May 11, 2009 from launch pad 39A at NASA's Kennedy Space Center.

JSC2011-E-044259 (16 May 2011) --- John McCullough (right), chief of the Flight Director Office; and astronaut George Zamka are pictured at the MOD console in the space shuttle flight control room in the Mission Control Center at NASA's Johnson Space Center during launch countdown activities a few hundred miles away in Florida, site of space shuttle Endeavour's STS-134 launch. Liftoff was at 8:56 a.m. (EDT) on May 16, 2011, from Launch Pad 39A at NASA's Kennedy Space Center. Photo credit: NASA

JSC2009-E-118819 (11 May 2009) --- John McCullough (seated foreground), chief of the flight director office; and Brent Jett (seated at right), director, flight crew operations; along with flight directors Tony Ceccacci (standing, left) and Norm Knight (standing, right), are pictured in the space shuttle flight control room in the Mission Control Center at NASA's Johnson Space Center during launch countdown activities a few hundred miles away in Florida, site of Space Shuttle Atlantis? scheduled STS-125 launch to service the Hubble Space Telescope. Liftoff was on time at 2:01 p.m. (EDT) on May 11, 2009 from launch pad 39A at NASA's Kennedy Space Center.

JSC2009-E-118818 (11 May 2009) --- Flight directors Bryan Lunney (seated at right), Norm Knight (left foreground) and Tony Ceccacci (standing, far right); along with Brent Jett (left background), director, flight crew operations; and John McCullough (seated, background), chief of the flight director office, are pictured in the space shuttle flight control room in the Mission Control Center at NASA's Johnson Space Center during launch countdown activities a few hundred miles away in Florida, site of Space Shuttle Atlantis? scheduled STS-125 launch to service the Hubble Space Telescope. Liftoff was on time at 2:01 p.m. (EDT) on May 11, 2009 from launch pad 39A at NASA's Kennedy Space Center.