A caveat to what Cobra said: you can only count on getting a "good" picture of what's around you once airborne *if* you have ADS-B Out installed and operating. If not, then it's hit and miss what you'll see. Further, as other people have noted, and I strongly second: even if you do have ADS-B Out and are at a decent altitude over relatively flat terrain and are within range of an ADS-B tower -- even then you might have aircraft around you that are within your defined iFly limits but somehow don't show up as targets on your display. Keep your eyes out.