There were a half dozen of these in our backyard patio and they relentlessly follow you to bite you.....nasty things they are.
 
 
 
 
The female yellow fly is one of the most serious biting fly pests wherever it occurs (males do not bite). It attacks man vigorously, and the bites are painful, often causing large and itchy swellings. Although it attacks throughout the day, it is most active during the late afternoon and on cloudy days. It is especially common near large bodies of water, but tends to remain in or near forests. It is one of the few tabanids that attacks indoors. All exposed parts of the victim's body may be attacked, and since the flight is rather quiet, a person is not aware of the flies until the sharp pain of the bite is felt.
 

 
 

You have scary flies!? Where do you live so I never get the notion to move there.
 
 

bitman
You have scary flies!? Where do you live so I never get the notion to move there.
 
 

Florida....the Sunshine State
 

Well that bites.

We had probably a hundred suicidal flies try to break through our living room windows last night. Really strange, they just flew really hard into the glass and just splatted there.  We just heard 'ping, ping, ping' for about 15 minutes and then it stopped.
Thankfully they were little ones, not nearly as creepy looking as Mesh's fly.

There may be flies in my future. Lots and lots of flies 

I eat well
I sleep well 
I drink plenty of water
I get plenty of exercise
       Yet
I Am still going to die 

Mental note to self:  One more reason to avoid Florida.

Why did the cow cross the road? 
 
  to get to the utter side

bayoubill
Why did the cow cross the road? 
 
  to get to the utter side

Personally, I would have gone with "udder side" but, hey, that's just me!