One of the remarkable things about Hawkeye is his keen sense of observation; he can assess his environment, tactical situations, any threats, or advantages in position very quickly. He also uses a wide range of technical weapons (namely arrows), most of which he designed and built himself. In most of his characterisations, Hawkeye has no extraordinary enhancements like Captain America, and in several comic timelines he is profoundly deaf.
I think Hawkeye would be a fantastic geocacher. We like our tech, we are observant of our environment when we search for caches, and we are often injured while on a mission (ok, is that just me? Everyone else gets torn up by thorns or trips over rocks and stuff, right? 
)and we are resourceful.
This cache is a tribute to one of my favourite Marvel characters. If you only know Hawkeye from the movies, grab a comic and get to know him better. He's well worth it!
Now, onto business.
WARNING!
Tree Climbing is dangerous and hazardous by its very nature. It is your sole responsibility to get proper instruction and to act safely and with caution while using the right equipment. Watching YouTube videos and/or just giving it a try does not replace the competent instruction and experience in all phases of climbing. Like all tree climbs, be safe out there and don't try anything stupid.
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Seriously. If you have no idea what kind of equipment is involved, put this cache on the ignore list.
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The cache sits approximately 12 metres above the ground and it shouldn't be too difficult to make out from below.
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This cache has been placed at a location which was deemed to be safe to reach. This might not have been a valid assessment or circumstances may have changed since placement. Various events or variables can have an effect on the structural integrity of a tree. Storms, lightning strikes, natural ageing, diseases, drought or bushfires are just a few of them. Like Hawkeye, you have to make your own assessment in order to stay alive.
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In order claim a find of this cache in compliance with the guidelines, you have to be at the cache location - which is up in the tree. Please don't claim a find unless you have actually made it up and at least touched the container (and have your name in the log.)
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It's not a requirement to post a picture of yourself up there, but it would be fun to see it anyway. Spoiler photos are welcome on this one.
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This cache qualifies for the 200 Metre Vertical Ascent Rope Challenge
You are personally responsible for using the proper techniques, good judgment, your own actions and decisions as well as getting the proper equipment. Failure to follow these warnings can result in severe injury or death. Heed the warnings -- your life depends on it.
(Thanks to ScattsMadhouse for allowing us to misappropriate their climbing safety text.)