Dwarf Nandina (Nandina domestica 'Fire Power')
same?

They look the same, but I'm not sure. @eclayne created the entry for Firepower five years after the entry for Fire Power was created by admin, so he may have known about a difference between the two. He should take a look at this.

Mobot has it listed as two words: http://www.missouribotanicalga...
RHS has it listed as two words: https://www.rhs.org.uk/Plants/...

Monrovia and a few other places have it listed as one word: http://www.monrovia.com/plant-...

Another site that popped up (name I won't mention) lists it as:
Nandina domestica 'Monfar'
PP14693, CBPR Pending; a/k/a Firepower, a/k/a Sienna Sunrise
Hybridized by Farrow, registered or introduced in 2002

Apparently Sienna Sunrise is a registered trademark and 'Monfar' is the cultivar name of that one. Patent 14693 It has nothing to do with 'Firepower' or 'Fire Power'. https://www.gardencentermarket...

MOBOT lists N. domestica 'Monfar' Sienna Sunrise: http://www.missouribotanicalga... and the patent number 14693 so it doesn't appear to be the same as Firepower.

Can you find a patent, a hybridizer, or an introduction date for Fire Power? That could prove they're the same plant or two different plants.

Oh, and look at this:

Heavenly Bamboo (Nandina domestica Sienna Sunrise®)

We might have three entries for the same plant.

We cross-posted, Lin, so please ignore my musings about Sienna Sunrise.

Well, it does look like 'Sienna Sunrise' and 'Monfar' are the same ... curious about 'Fire Power' or 'Firepower'. Still haven't found anything else yet.