A hospital in the United States went through some serious preparations for its first ever delivery of sextuplets.
A team of 40 people worked together at the Huntsville Hospital in Alabama in the lead-up by performing carefully choreographed drills.
"A lot of people don't realise what it takes to prepare for an event like this," Dr Antonio Gonzalez-Ruiz told WHNT19 News.
"It was a phenomenal undertaking, and it paid off."
Practising on IV bags during 12 separate drills, a "code six" was issued - referring to six babies - and each "baby" was given its own team of staff and its own colour (red, orange, yellow, green, blue and violet, the precise order of the colours of the rainbow.)
"All the key players sat down, we kind of made a list of anticipated needs," nursing unit director Jade LeCroix said.
"Even as far as having security available on the floor to make sure there's crowd control because we knew so many people would be involved in the delivery."
The actual birth was incredibly quick, with all six babies delivered in an incredible four minutes to parents Courtney and Eric Waldrop.
The babies were born 10 weeks early and weighed less than 1.5kg on birth, but all were healthy and developing well, doctors said.
The three boys - Blu, Layke and Tag - and the three girls - Rawlings, Rayne and River - join Courtney and Eric's three other children, son Sailor, 8, and five-year-old twin boys Bridge and Wales.
The babies were discharged from Hunstville Hospital on February 21, but not before photographer Ashley Sargent had commemorated the occasion with an adorable rainbow-themed photo shoot.