A man and a wife saw what happened and the man ran with the baby’s mother to help her pick the child up from the ground, police said. CBS Chicago
I presume this was the level of detail in the police report, so the journalist is just echoing what’s in the report. But “husband and wife” or “man and woman” would be more parallel. Given the context of this particular story, “two people” would also be fine.
Similar:
This is what the techbros are excited about? Really?
Crying Myself to Sleep on the Biggest Cruise Ship Ever
New infographic to help our graduating English majors make sense of their capstone project...
Quantity leads to quality - Austin Kleon
Microsoft is once again asking Chrome users to try Bing through unblockable pop-ups
Interesting use of A.I. in a radiology journal