Captain America: Winter Soldier Vol. 2 Ed Brubaker

Master Assassin: Barnes is an adept of his generation as Matthew Murdock and Elektra Natchios is of theirs, possibly the most lethal assassin in the Marvel Universe rivaling others such as Bullseye or Elektra. During an operation on the Russian Front with the Invaders, Barnes has from concealment thrown a 60 centimeters-long knife to penetrate the winter uniform outer garment of a German soldier with such accuracy as to pierce his heart in high arctic winds several meters. Barnes has mastered and implemented several methods to silently eliminate sentries with bladed weapons, garrotes or his bare hands, making him as lethal in his own way as his former Invader teammates, the Torches, Union Jack or Namor. He is a master at stealth and tracking and is very intelligent. He was able to render Wolverine's superhumanly acute senses such as smell completely useless by luring him to an abandoned warehouse that was completely soaked on the inside with oil and even soaking himself to make it so that Wolverine could not detect him.[136] Barnes has made a habit out of constantly studying his surroundings and depicting what he can and cannot do in whatever situation he should fall in much like his former partner, Captain America before his death. During Barnes' visit to the Captain America exhibit that had been made to honor him after his death, he was constantly detecting potential ways to sneak in and out of the museum and the room without being detected and only taking out a small number of security to do so.[34] The Black Widow stated to Tony Stark that he was one of the most dangerous men she knew.[34]

Captain America: Winter Soldier Vol. 2 Ed Brubaker