Lisa Cargile captured workers in her building watching the fire at a Houston apartment block - which is under construction - from a window at the Allen Center on Clay Street.
No injuries have been reported, according to the Houston Fire Department. One construction worker was rescued from the third floor.
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Scientists are researching a blood test which can quickly detect colon, lung, breast, stomach and endometrial cancer.
Transport bosses are said to be in "active discussions" with the company to encourage it to extend its pilot scheme to the UK's capital.
Reports suggest the 67-year-old is expected to be named as one of the hosts of the new series within days.